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Every NCERT book that matters for UPSC — open a book, then a chapter. Learn each chapter's concepts, then how UPSC tests them — with diagrams, flowcharts and the past questions to attempt.
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← Understanding Society: India and Beyond – II — all chaptersLife on Earth
Start here: why this chapter matters
In simple wordsLook at a patchwork quilt: each patch has its own colour. The Earth's patches are biomes — hot wet forests, dry deserts, frozen tundra — each with its own climate, plants and animals. People live in these patches too, take what they need, and can either look after them or wear them out. This chapter is about the patches and the people.
This is Chapter 2 of NCERT's new integrated Grade 9 textbook Understanding Society: India and Beyond, Part 2: 24 pages (21–44; the last is a notes page). Its parts: biomes and their types (a world map, Fig. 2.2), the forest, grassland, desert and tundra biomes (Figs 2.3–2.8), aquatic biomes and a ‘biome pyramid’ (Figs 2.9, 2.10); biodiversity and the geography of conservation (Figs 2.11–2.13); forests and people — ecotourism, livelihoods, sacred groves, forest dwellers, GI tags, challenges and government efforts, and the Mendha Lekha case (Figs 2.14–2.22); and ecological commons — Bihar's fisheries and India's tanks (Figs 2.23, 2.24). It ends with a summary and nine questions and activities. Every number is recomputed; our additions are marked †. We use nine concept sections, one per topic — none padded.
- How this book relates to UPSC, honestly: it is a new, foundational Class 9 book that mixes geography, ecology and society. The UPSC-depth treatment sits in the senior books: kegy214 (Class 11: Biodiversity and Conservation — hotspots, protected areas), kegy105 (Class 11: Natural Vegetation — India's forest types), jess102 (Class 10: Forest and Wildlife Resources — Chipko, JFM, sacred groves), kesy203 (Class 11 Sociology: Environment and Society — commons and conflicts) and keps208 (Class 11 Polity: Local Governments — PESA).
- Biomes and climate: kegy211 (Class 11: World Climate and Climate Change) and legy104 (Class 12: Primary Activities — gatherers, herders). Tribal communities: lesy103 (Class 12 Sociology). Water traditions: jess103 (Class 10: Water Resources).
- UPSC from this chapter: Prelims asks about biomes — rainforest regions (1983), taiga conifers (1987), savannas (1989), the richest biome (1994), a rainforest described (2021); the food pyramid (1992); hotspots in India (2010); Chipko (1979); the Forest Rights Act (2013, 2019); GI tags (2010); and who makes the world's oxygen (2025). Mains GS1 asks about the tundra (2026), tribal knowledge systems (2021), forests and climate change (2020) and the diversity of India's vegetation (2023); GS3 about how biodiversity varies in India (2018). We link 17; questions on protected-area rules, PESA details and specific parks sit on the senior chapters.
| Word | What it means here |
|---|---|
| Biome | A large natural region with a similar climate and similar kinds of plants and animals |
| Ecosystem | A smaller unit in which living things and their non-living surroundings interact |
| Terrestrial / aquatic | On land / in water (freshwater or marine) |
| Canopy | The roof of tree crowns in a forest |
| Permafrost | Ground that stays frozen almost all year |
| Taiga | The cold coniferous forest of pines, spruces and larches |
| Producer / consumer | An organism that makes food from sunlight / one that eats other organisms |
| Trophic level | A step in the feeding chain: producers, herbivores, carnivores, top predators |
| Biodiversity | The variety of life — species, genes within species, and ecosystems |
| Endemic | Found naturally in one place and nowhere else |
| Hotspot | A region very rich in endemic species that has lost much of its natural habitat |
| Corridor | A strip of habitat that lets animals move between protected areas |
| Ecotourism | Travel to natural places that does little harm and benefits local people |
| NTFP / minor forest produce | Forest products other than timber: honey, leaves, fruits, resins, bamboo, medicinal plants |
| Sacred grove | A forest patch protected by a community for religious or cultural reasons |
| Geographical Indication (GI) | A label showing that a product's quality or reputation comes from its place of origin |
| Ecological commons | Natural resources shared and used by a community, not owned by one person |
Reading the chapter opening and Fig. 2.1 ‘Earth as a giant patchwork quilt’ (page 21)
- Opening: a banner photograph of a small tree growing on a clod of earth held in a cupped hand against a green background; a round cartoon of two students talking; a QR code to NCERT's e-content; and three ‘Big Questions’ — how physiography and climate shape life, how humans and other life are interconnected, and why and how to conserve life forms. The point: geography, ecology and people together. We answer the Big Questions in the in-text section.
- Fig. 2.1: a painted globe made of colourful quilt patches — greens, browns, blues — sewn together. The point: biomes are the ‘patches’ of the Earth's living quilt; the text adds that ‘bio’ comes from the Greek bios (life) and ‘-ome’ means a group.
At a glance — the six ideas to carry away
- Biome = a large natural region with similar climate, plants and animals; an ecosystem is a ‘neighbourhood’ inside it. Terrestrial and aquatic; set by temperature, rainfall and vegetation.
- Tropical rainforests (Amazon, Congo, South-East Asia; in India the Andamans and the North-East): hot and wet all year, layered (emergent, canopy, understory, floor), a ‘gene bank’. Grasslands: temperate (prairies, steppes — farming) and tropical savannas (Africa). Deserts: hot (Sahara) and cold (Gobi); Rann of Kutch a salt desert. Tundra: coldest, permafrost, mosses and lichens. Taiga: pines, spruces, larches.
- Aquatic biomes ≈ three-fourths of the surface: freshwater and marine. Pyramid: producers → herbivores → carnivores → top predators; energy is lost as heat at each step.
- Biodiversity: species, genetic and ecosystem variety. Conservation is geographical: hotspots (Himalaya, Western Ghats, North-East, Andaman & Nicobar in the book), ecosystem-based conservation, protected areas, barriers and corridors, locally suited practices.
- Forests and people: ecotourism (Thenmala, Kerala — first planned ecotourism site; Swadesh Darshan 2.0); NTFPs (tendu, mahua, honey, lac, bamboo); sacred groves (over 1,00,000); forest dwellers as knowledge holders and protectors (Bishnoi, Chipko); GI tags (eight forest-linked examples).
- Challenges and responses: services, fuelwood smoke (PMUY), fires (≈ 36% of forest cover fire-prone, ≈ 4% extremely — FSI), wildlife conflict; FRA 2006, JFM, PESA, DAJGUA, PM JANMAN; Mendha Lekha (Gond village, 1,800 ha, Gram Sabha rule); commons: Bihar's fisheries (Jalkar Act 2006) and India's tanks.
1. Biomes: the Earth's living patchwork
In simple wordsA city has big districts (old town, industrial zone, suburbs) and, inside each, small neighbourhoods. Biomes are the Earth's big districts; ecosystems are the neighbourhoods — a pond, a grove, a stretch of grassland — where living and non-living things meet every day.
Biomes are large natural regions of the world where certain types of plants and animals live under similar climatic conditions — icy tundras, hot deserts, green forests, vast grasslands. A biome is a broad environmental region; an ecosystem is a neighbourhood within it where plants, animals and non-living things interact closely. Together the biomes make up the living world and help keep nature in balance. Biomes are terrestrial (land) or aquatic (water). What decides which plants and animals can thrive in a biome: temperature, precipitation patterns, the dominant plant species and the growth forms of vegetation. The book's world map shows six terrestrial biomes: tropical rainforest, grassland, desert, temperate deciduous, taiga and tundra.
| Biome on Fig. 2.2 (map described in words) | Where it lies on the map | Climate and vegetation (book / †) |
|---|---|---|
| Tropical rainforest | a band astride the Equator: the Amazon basin, the Congo basin, South-East Asian islands and peninsulas; small patches in Central America, on India's west coast and North-East (as drawn) | hot and wet all year; dense, layered evergreen forest |
| Grassland | wide belts on either side of the rainforests (Africa, Brazil, northern Australia, India) and in mid-latitude interiors (North American prairies, Eurasian steppes, Argentina) | moderate rain, too little for dense forest; grasses with scattered trees in the tropics |
| Desert | the Sahara and Arabia, interior Australia, south-western Africa, the coast of Peru and Chile, south-western North America, Central Asia | very little rain; hot or cold; sparse, drought-adapted plants |
| Temperate deciduous | eastern North America, western and central Europe, eastern China, small southern-hemisphere patches | moderate temperatures, distinct seasons; broad-leaved trees that shed leaves (glossary) |
| Taiga | a broad belt across Canada and from Scandinavia across Siberia | long cold winters; conifers — pines, spruces, larches (glossary) |
| Tundra | the far northern fringes of North America and Eurasia, coastal Greenland | coldest; permafrost; mosses, lichens, shrubs |
| (Unshaded) | Antarctica, Greenland's interior, high mountains and some other regions left white | ice sheets and highlands — not given a biome on this map |
⤵ What decides the biome of a place (the book's factors)
Temperatureset by latitude and altitude
Precipitationhow much rain or snow, and in which season
Soil and water available to plantsfrozen, salty, sandy or fertile
Dominant plants and their growth formstall evergreens, grasses, conifers, mosses
Animals adapted to those plants and that climatea biome: forest, grassland, desert, tundra — or aquatic
Reading Fig. 2.2 ‘World map showing distribution of biomes’, the glossary and the activity (page 22) — the map described in words, not redrawn
- Fig. 2.2 (marked ‘map not to scale’): a world map with the Equator, the two tropics and the two polar circles drawn as lines, and six colours for tropical rainforest, grassland, desert, temperate deciduous, taiga and tundra. The colours fall in rough belts by latitude: rainforest astride the Equator, grassland and desert either side of it, temperate deciduous and grassland in mid-latitudes, a taiga belt across the northern continents, and a thin tundra fringe along the Arctic coasts; Antarctica and some highlands are left white. The point: biomes follow climate, and climate follows latitude (and altitude). Every belt is in our table.
- Glossary: temperate deciduous biome; taiga biome.
- Let's Map (three questions on the map): outlines in the in-text section.
NCERT details to read carefully — biomes
- Biome vs ecosystem: a biome is the large climatic region; an ecosystem can be any size — a pond, a forest, even a biome — wherever living and non-living parts interact. The book's ‘neighbourhood’ image is a good start.
- The world map shows only six terrestrial biomes; Mediterranean scrub (chaparral), mountain and polar ice regions appear in Fig. 2.10 or are left white.
- Temperature falls both with latitude and with altitude, so the Himalaya repeats the ladder from tropical forest to alpine tundra-like meadows within a few hundred kilometres (Beyond NCERT; kegy105).
2. The forest biome and the layered rainforest
In simple wordsA rainforest is like a tall apartment block: penthouse trees on top in full sun, a busy middle floor of leafy crowns where most animals live, a dim lower floor of young trees and creepers, and a dark, damp basement where fallen leaves rot within weeks.
A forest biome is ‘nature's giant green umbrella’. Tropical rainforests lie mainly near the Equator, between the Tropics of Cancer and Capricorn (23.5° N and S); they stay hot and wet all year, which supports dense forest. The largest are in the Amazon Basin (South America), the Congo Basin (Africa) and parts of South-East Asia (Indonesia, Malaysia); smaller ones in Central America, and in India in the Andaman and Nicobar Islands and the North-Eastern states. Together they are the world's richest storehouse of biodiversity and genetic resources — a ‘gene bank’ — and help maintain oxygen levels and balance the climate. A rainforest has layers: the emergent layer, the upper canopy, the understory or lower canopy and the forest floor.
Reading Fig. 2.3 and Fig. 2.4 ‘Ideal structure of a rainforest biome’ (pages 23–24)
- Fig. 2.3: four photographs — a beach with trees growing into turquoise water in the Andaman Islands; the grassy, rolling Dzukou Valley in Nagaland; the Nohkalikai Falls plunging from a forested cliff near Sohra (Meghalaya); and Gurudongmar Lake below snow peaks in Sikkim. The point: the North-East and the islands hold very different landscapes close together — though only the first and third show forest; Dzukou is a grassy valley and Gurudongmar a high, nearly treeless lake.
- Fig. 2.4 (in a Let's Explore box): a drawing of tall rainforest trees with palms, ferns and climbers beside four labelled bands — emergent layer, upper canopy, understory/lower canopy, forest floor — each with a yellow shape: a full circle, three-quarters, a half and a quarter. The point (the box's question): the yellow shapes show how much sunlight reaches each layer, less and less towards the floor. Our layer diagram carries it.
NCERT details to read carefully — forests
- Rainforests lie mostly within about 10° of the Equator; the belt between the tropics also holds savannas, monsoon forests and deserts (Sahara, Thar). Safe line: ‘near the Equator, within the tropics’.
- Rainforest regions: Amazon, Congo, South-East Asia, Central America (UPSC 1983). The greatest diversity of species is in tropical moist forests (UPSC 1994).
- A rainforest's floor is nearly bare because leaf litter decomposes faster there than in any other biome, and many plants reach the light by climbing or growing on branches (epiphytes) — UPSC 2021 described exactly this. Its soil is poor in nutrients: they sit in the living plants (Beyond NCERT).
- The ‘lungs of the Earth’ image oversells forests' oxygen: marine phytoplankton and photosynthetic bacteria make about half the world's oxygen, more than rainforests (UPSC 2025), and a mature forest uses up most of the oxygen it makes in respiration and decay. Forests matter most as carbon stores, rain-makers and habitats.
3. Grasslands, deserts and the tundra
In simple wordsGive a garden a little rain and you get a lawn, not a forest; give it almost none and you get a few tough cacti; freeze it most of the year and only moss survives. Grasslands, deserts and the tundra are the Earth's ‘lawn’, ‘cactus pot’ and ‘freezer’.
Grasslands are large open areas of grass with few trees, where rainfall is moderate — not enough for dense forest. Temperate grasslands (the prairies of North America, the steppes of Asia) have fertile soils and are often farmed. Tropical grasslands or savannas (as in Africa) have scattered trees and large animals — lions, elephants, giraffes. Grasslands support grazing animals, farming and livestock. Deserts are the driest biomes: hot (the Sahara) or cold (the Gobi). The Rann of Kutch in Gujarat is one of the world's largest salt deserts — a marshy wetland in the monsoon and a white salt flat in the dry season. Desert plants (cacti) and animals (camels, lizards, snakes) store water and withstand heat and dryness; deserts have sandy soils and sparse vegetation but unique ecosystems, and often minerals and oil. The tundra is the coldest biome, near the Arctic and Antarctic, with long harsh winters, short summers and permafrost that stops trees from growing; mosses, lichens and small shrubs grow, and reindeer, arctic foxes and polar bears live there. It is fragile: small temperature changes upset it.
| Biome (book) | Climate | Plants | Animals (book) | People's uses (book / †) |
|---|---|---|---|---|
| Temperate grassland (prairie, steppe) | moderate rain; warm summers, cold winters | grasses; few trees | grazing animals | farming on fertile soil; livestock |
| Savanna | warm; a wet and a dry season † | grasses with scattered trees | lions, elephants, giraffes | herding, farming; wildlife tourism † |
| Hot desert (Sahara, Thar) | very little rain; very hot days | cacti and other water-storing plants | camels, lizards, snakes | herding, oasis farming, minerals and oil |
| Cold desert (Gobi; Ladakh †) | very little rain; very cold winters | sparse shrubs | Bactrian camel (Nubra) † | herding, trade † |
| Salt desert (Rann of Kutch) | monsoon flooding, then drying | salt-tolerant plants † | wild ass, flamingos † | salt-making † |
| Tundra | coldest; permafrost; short summer | mosses, lichens, small shrubs | reindeer, arctic foxes, polar bears | herding, hunting, fishing †; oil and gas † |
Reading Figs 2.5–2.8 and the boxes (pages 24–27)
- Fig. 2.5 ‘Typical grassland landscape’: a golden grassland at a waterhole with an elephant, two lions, gazelles, a giraffe and a zebra, herds and flat-topped trees in the distance — an African savanna. The point: tropical grasslands support big grazers and predators. Let's Explore asks which of these live in India's grasslands (outline in the in-text section).
- Fig. 2.6 ‘Life in the Thar Desert’: women carrying water pots on their heads past a stone house, and a herder in a bright turban walking in front of his camels. The point: water and herding shape desert life.
- Fig. 2.7 ‘Camels in deserts’: (a) a lean, short-haired one-humped camel in Rajasthan; (b) a shaggy, thick-coated two-humped camel in the Nubra Valley, Ladakh, with grey mountains behind. The point: the same kind of animal adapts to a hot or a cold desert. The Let's Explore questions are answered in the in-text section.
- Fig. 2.8: (left) open rocky tundra with low brown and green ground cover and snow patches; (right) a Himalayan scene of dark conifers below snow peaks. With the Think About It box: why the tundra has mosses and lichens while the Himalaya has conifers.
NCERT details to read carefully — dry and cold biomes
- Savannas are not only African: they cover much of northern Australia, Brazil and parts of India. UPSC 1989 keyed ‘Africa’ from a list that also offered Australia — a debatable key. Strategy: if only one answer is allowed, pick Africa (the largest and classic savanna); know that Australia's is real too.
- Cacti are native to the Americas; the spiny succulents of the Thar are mostly euphorbias, and its typical trees are khejri and babool (Beyond NCERT). The book's ‘cacti’ means drought-adapted plants in general.
- Tundra is almost all in the Arctic; the Antarctic has only small ice-free patches. Polar bears and reindeer live only in the Arctic.
- Pine, spruce and fir = taiga (UPSC 1987). Grasslands' local names (Beyond NCERT): prairies (North America), steppes (Eurasia), pampas (Argentina), veld (South Africa), downs (Australia).
- Fig. 2.7: the Rajasthan camel is the one-humped dromedary; the Nubra camel is the two-humped Bactrian (Beyond NCERT).
4. Aquatic biomes and the ‘biome pyramid’
In simple wordsA field of grass can feed many deer, the deer can feed a few tigers, and a tiger needs a huge area. At each step most of the food's energy is burnt up just to stay alive. That is why there are always far fewer tigers than deer, and far fewer deer than blades of grass.
Aquatic biomes cover about three-fourths of the Earth's surface. Freshwater biomes (rivers, lakes, ponds, wetlands) matter for farming, drinking water and species such as fish, frogs and insects. Marine biomes (oceans, seas, coral reefs) are rich in biodiversity, influence climate by storing and spreading heat, are home to whales, dolphins, fish and plankton, and feed millions of people. The book's ‘biome pyramid’ shows how organisms are related, usually by energy, number or biomass. At its base are the producers (plants and algae) that capture solar energy by photosynthesis; above them herbivores (primary consumers), carnivores (secondary consumers) and top predators (tertiary consumers). Going up, the number of organisms, the biomass and the available energy fall, because energy is lost as heat at each trophic level in metabolism.
Reading Fig. 2.9, the local-environment activity and Fig. 2.10 ‘Biome pyramid’ (pages 27–29)
- Fig. 2.9 ‘The diversity of the aquatic biome’: an aquarium-like underwater photograph of a spotted shark, shoals of silvery fish and corals. The point: marine biomes are crowded with life.
- Let's Explore (p. 28): a table to fill in for your locality — trees and plants, insects, animals, non-living things; examples observed; interaction with humans. Outline in the in-text section.
- Fig. 2.10: a triangle of illustrated vegetation bands. Down the left side run polar region, subpolar, temperate, tropical; an arrow on the right side runs between hot (bottom) and cold (apex); an arrow along the base runs from wet to dry. Eleven numbered types: (1) tundra at the apex; (2) coniferous (boreal) forest; (3) deciduous forest, (4) chaparral, (5) grassland, (6) desert in the temperate band; and (7) rainforest, (8) scrubland, (9) tropical seasonal forest, (10) savanna, (11) desert along the tropical base, from wet to dry. The point of the figure: biomes change with temperature (latitude) and moisture — the same idea as our chart in section 1. The Let's Map questions are outlined in the in-text section.
NCERT details to read carefully — the ‘biome pyramid’
- Two different ideas share one name. Fig. 2.10 is a biome-classification triangle (temperature and moisture), while the text beside it describes an ecological (trophic) pyramid of energy, numbers and biomass. ‘Biome pyramid’ is not a standard term; in exams say ‘ecological pyramid’ (or pyramid of energy / numbers / biomass) for the feeding levels, and ‘biome distribution by temperature and rainfall’ for the triangle.
- The energy pyramid is always upright. Pyramids of numbers and biomass can be inverted — one tree carries thousands of insects; in the sea, plankton at any moment weigh less than the animals they feed (Beyond NCERT). The book's ‘number and biomass decrease’ is the usual, not the universal, case.
- Top carnivores are fewest and get the least energy, so they are the most delicately balanced level (UPSC 1992).
- About 10% of energy passes from one level to the next (Lindeman's rule of thumb; Beyond NCERT) — so food chains rarely have more than four or five links.
- Fig. 2.10 lists ‘Desert’ twice (6 and 11): the first is a temperate/cold desert, the second a tropical hot desert.
5. Biodiversity and the geography of conservation
In simple wordsIf you save money, you don't hide it all in one place — but you do guard the drawer that holds the rarest coins. Conservation works the same way: protect the places that hold species found nowhere else, keep paths open between them, and let people nearby use land in ways that suit it.
Biodiversity is the variety of life on Earth — plants, animals, microorganisms and their ecosystems — including the number of species, the genetic differences within species, and the variety of habitats and ecological processes; it keeps ecosystems healthy and supports human survival. Because it is unevenly distributed, geography is central to conservation. The book's five key aspects: hotspots (the Himalaya, the Western Ghats, North-East India and the Andaman and Nicobar Islands are rich in species found nowhere else); ecosystem-based conservation suited to the setting (mangroves on coasts, afforestation in mountains); protected areas — national parks, wildlife sanctuaries, biosphere reserves and World Heritage Sites — chosen by geography to save critical habitats and prevent fragmentation; barriers and corridors — rivers, mountains and valleys steer animal movement and gene flow, so planners create wildlife corridors; and human–environment interaction — sustainable practices differ by place, such as terrace farming in hills and agroforestry in plains.
| Let's Map place (p. 31) | State | Why it is a biodiversity region (Beyond NCERT †; dates verify) |
|---|---|---|
| Namdapha National Park | Arunachal Pradesh | lowland rainforest to alpine heights (roughly 200 m to over 4,500 m); national park and tiger reserve from 1983; home to tiger, leopard, clouded leopard and snow leopard (verify) |
| Rann of Kutch | Gujarat | salt marsh: wetland in the monsoon, white salt flat in the dry season (book); Indian wild ass, flamingos; Kachchh Biosphere Reserve 2008 (verify) |
| Gahirmatha beach | Odisha | one of the world's largest mass-nesting beaches of olive ridley turtles; marine sanctuary 1997 (verify) |
| Gulf of Mannar | Tamil Nadu | coral reefs, sea grass, dugong; marine national park 1986 and biosphere reserve 1989, in UNESCO's network 2001 (verify) |
| Pachmarhi | Madhya Pradesh | Satpura hills; biosphere reserve 1999, in UNESCO's network 2009 (verify) |
| Achanakmar–Amarkantak | Madhya Pradesh and Chhattisgarh | Maikal hills, where the Narmada and the Son rise; biosphere reserve 2005, in UNESCO's network 2012 (verify) |
| Protected area (book's list) | What it protects (Beyond NCERT †) | People's use (Beyond NCERT †) |
|---|---|---|
| National park | a whole habitat; boundaries fixed by notification under the Wild Life (Protection) Act, 1972 | no grazing or collection of forest produce (UPSC 2012) |
| Wildlife sanctuary | habitat of wildlife | some regulated uses may be allowed |
| Biosphere reserve | a large landscape: core, buffer and transition zones; conservation with people's livelihoods | people live and work in the buffer and transition zones |
| World Heritage Site (natural) | places of outstanding universal value listed by UNESCO, e.g. the Western Ghats (2012) | per national law |
Reading Figs 2.11, 2.12 and the Let's Map with Fig. 2.13 ‘Political map of India’ (pages 29–31) — the map described in words, not redrawn
- Fig. 2.11 ‘Biodiversity in wild animals’: a grid of 35 small photographs — birds (peacock, weaver, owl, flamingo, ostrich), insects, reptiles, a panda, monkeys, big cats, buffalo, zebra, antelopes and more. The point: biodiversity means sheer variety.
- Fig. 2.12: five photographs — the endangered Nilgiri tahr (a wild goat on a grassy slope), a Himalayan snowcock, a pair of hairy spiders from the Western Ghats, a yak carrying loads with a herder, and a mangrove forest in the Andaman Islands. The point: each hotspot has its own signature species and habitats.
- Fig. 2.13: a blank political map of India with state boundaries, latitude and longitude lines at 10° intervals, a compass rose and a 400-km scale, the Arabian Sea, the Bay of Bengal and the Indian Ocean labelled. The activity asks you to mark six biodiversity regions. The point: link conservation to place. Our table names each region with its State and why it matters; mark them on your own blank map.
NCERT details to read carefully — hotspots and protected areas
- The book's hotspot list is regional. The formal hotspots (Conservation International) touching India are four: Himalaya, Indo-Burma (North-East and the Andamans), Western Ghats and Sri Lanka, and Sundaland (the Nicobars). Hotspots are not only tropical, and there is no ‘Western Himalaya’ hotspot (UPSC 2010).
- Criteria: high species richness and endemism, and serious threat (≥ 70% habitat lost) — not vegetation density (UPSC 2011, linked on kegy214).
- ‘World Heritage Site’ is a UNESCO listing, not a category under India's wildlife law; biosphere reserves are a UNESCO (Man and the Biosphere) idea adopted by India.
- Protected-area counts change often — check the latest Wildlife Institute of India (ENVIS) figures before quoting a number.
6. Forests and people: ecotourism, livelihoods and forest dwellers
In simple wordsFor a family on a forest's edge, the forest is a kitchen (fruits, tubers), a fuel shed, a pharmacy (herbs), a shop (honey and leaves to sell), a temple (sacred groves) and a school (knowledge passed down). Look after it, and it keeps giving.
Ecotourism is responsible travel to natural areas that conserves them: unlike mass tourism it keeps environmental impact low, respects local communities and teaches about ecosystems, while visits to national parks, sanctuaries or rainforest treks bring income to local people. The Swadesh Darshan 2.0 scheme of the Ministry of Tourism aims at sustainable, destination-centric tourism with community involvement. Thenmala (‘Honey Hill’) in Kollam district, Kerala, in the Western Ghats (a UNESCO World Heritage Site), is India's first planned ecotourism destination, developed by the State's Tourism, Forest and Irrigation Departments; local people work as guides, eco-guards and service providers. Forests give rural and tribal communities food, fuel, fodder, medicine, shelter, timber, bamboo and firewood, and non-timber forest products — honey, fruits, nuts, resins, medicinal plants — for daily needs and income; communities such as the Gonds and Bhils honour forest deities before collecting. Sacred groves — over 1,00,000 in India, many unrecorded; called devrai, devarakadu, kavu, sarna — are small but biodiversity-rich and often protect streams and groundwater. Forest dwellers, and women especially, meet household needs, earn from NTFPs, hold traditional knowledge, carry cultural roles and protect forests — the Bishnoi movement led by Amrita Devi in Rajasthan, which inspired the Chipko movement, where village women hugged trees to stop felling.
| Forest produce (Fig. 2.16, map described as a table) | States shown (book) |
|---|---|
| Timber and bamboo | Assam, Tripura, Kerala |
| Tendu leaves, mahua flowers, sal seeds, gums | Madhya Pradesh, Chhattisgarh |
| Herbs — ashwagandha, neem, tulsi | Himalayan region, Western Ghats |
| Wild fruits, honey, mushrooms, roots | Jharkhand, Odisha |
| Ecotourism | Uttarakhand, Assam, Kerala |
| Handicrafts and cottage industries | Rajasthan, Kerala |
⤵ How forest dwellers are tied to forests — the five links of Fig. 2.17
Household needsfirewood, fodder, fruits, roots, tubers, medicinal plants
Livelihood and incometendu, mahua, honey, lac, bamboo
Knowledge holdersherbs and plants for food, medicine, culture
Cultural and social rolerituals, festivals, beliefs
Forest protectionBishnoi, Chipko; community management and eco-restoration
Resultforests sustained by people who depend on them
Reading the ecotourism boxes, Figs 2.14–2.18 and the Think About It box (pages 32–36) — the produce map described in words
- Glossary: ecotourism. Don't Miss Out: Swadesh Darshan 2.0. Let's Explore — Thenmala: the case and two questions (ecotourism sites in your State; how a tourist should behave) — outlines in the in-text section.
- Fig. 2.14: visitors climbing a long steel walkway through green forest at Thenmala. The point: you can enjoy the canopy without trampling it.
- Fig. 2.15: a painting of men and women in white and red clothes with folded hands before a large tree hung with offerings and pots. The point: rituals that honour forest deities also restrain over-use.
- Think About It — sacred groves: why they are special (biodiversity, water); outline in the in-text section.
- Fig. 2.16 ‘Forest produces from different Indian states’ (map not to scale): an outline of India with cartoon figures in local dress and small icons of bamboo, logs, leaves, herbs, mushrooms and craft items placed over the States; a key lists six produce groups with States. The point: every region earns from its forests differently. Our table carries the key; add your own State's produce.
- Fig. 2.17: a central photograph of women carrying bundles of leaves and wood down a hill path in a mountain forest near Sohra, Meghalaya, ringed by five boxes (the five links in our flow).
- Fig. 2.18 ‘Traditional tribal livelihoods’ (Let's Explore): four photographs — a woman carrying a stack of huge woven bamboo baskets at a market; women selling round fruits (likely wild produce) from baskets; people sorting tubers or roots on sacks; and hands holding turmeric-like rhizomes and small dried fish. Classify them as craft (bamboo baskets), food (fruits, dried fish), and spice or medicinal produce (tubers, turmeric).
| Ecotourism (Beyond NCERT attribution) | Who | Position |
|---|---|---|
| Expand nature tourism | Ministry of Tourism; State tourism boards; tour operators | brings income and jobs to remote forest villages and pays for conservation |
| Limit numbers | Ecologists; wildlife managers | vehicles, noise, waste and buildings near core habitats disturb animals; cap visitor numbers by carrying capacity |
| Community-owned ecotourism | Village forest committees; community-tourism advocates | earnings should stay with local people, as guides and hosts (the Thenmala model) |
| Bare facts | Government of India; Kerala | Swadesh Darshan launched 2014–15; Swadesh Darshan 2.0 announced 2022 (check); Thenmala ecotourism project from the late 1990s (check) |
NCERT details to read carefully — forests and people
- Bishnoi: at Khejarli (near Jodhpur) in 1730, Amrita Devi and, by tradition, 363 Bishnois gave their lives to stop the felling of khejri trees (Beyond NCERT). It is remembered as a ‘movement’ and is often cited as an inspiration for Chipko.
- Chipko began in 1973 in the Garhwal Himalaya, then in Uttar Pradesh (Uttarakhand was formed in 2000); villagers hugged trees to prevent the felling of green trees (UPSC 1979).
- Sacred-grove names by region (Beyond NCERT): devrai (Maharashtra), devarakadu (Karnataka), kavu (Kerala), sarna (Jharkhand and nearby), law kyntang (Meghalaya), orans (Rajasthan). ‘Over 1,00,000’ is an estimate.
- The book's ‘Keralam’ is the State's name in Malayalam; check whether the official name has been changed from Kerala before using it.
7. Geographical Indications: when a place is part of the product
In simple wordsDarjeeling tea tastes the way it does because of Darjeeling's hills, mist and soil. A Geographical Indication is a legal label that says ‘this really comes from here’, so that tea grown elsewhere cannot borrow the name — and the producers of the place get the benefit.
Some forest products are unique to specific regions and are recognised as Geographical Indications (GI). A GI tag is a type of intellectual property right that identifies a product as coming from a particular place whose quality, reputation or other characteristics are essentially linked to that origin. It protects region-specific products, promotes cultural heritage and brings economic benefits to local communities through exclusive market recognition. India has several forest-based products with GI tags because they are unique to their region, linked to traditional knowledge and dependent on the forest ecosystem; the book maps eight.
| No. on Fig. 2.19 | GI product | State (book) | What makes it special (book) |
|---|---|---|---|
| 1 | Ramban Sulai Honey | Jammu and Kashmir | honey from sulai (wild) flowers; antioxidant, distinct flavour |
| 2 | Tezpur Litchi | Assam | bright colour, high pulp; forest-influenced soils and climate |
| 3 | Channapatna Toys | Karnataka | lacquered toys of the forest tree Wrightia tinctoria (aale mara) |
| 4 | Kandhamal Haldi | Odisha | turmeric grown by tribal communities in forest areas; high curcumin |
| 5 | Erode Manjal (turmeric) | Tamil Nadu | used in cooking and Ayurveda |
| 6 | Nilgiri Tea | Tamil Nadu, Kerala, Karnataka (book) | plantation tea whose quality reflects Western Ghats conditions |
| 7 | Tripura Queen Pineapple | Tripura | sweetness and aroma |
| 8 | Khasi Mandarin | Meghalaya | citrus from the forested hills |
| Trade mark vs GI (Beyond NCERT †) | Trade mark | Geographical Indication |
|---|---|---|
| Belongs to | an individual or a company | the producers of a place — a community right |
| Tells you | who made it | where it comes from and why that matters |
| Transfer | can be assigned or licensed | the GI Act, 1999 (Section 24) bars assigning or licensing a GI (see the trap) |
| Law in India | Trade Marks Act, 1999 | Geographical Indications of Goods (Registration and Protection) Act, 1999, in force from 2003; enacted to meet WTO (TRIPS) obligations; first GI: Darjeeling tea (2004–05) |
Reading Fig. 2.19 ‘Some GI-tagged forest products of India’, the glossary and the activity (pages 36–38) — the map described in words, not redrawn
- Fig. 2.19 (map not to scale): a yellow outline of India with eight numbered round photographs placed on the States — (1) honey jars in the far north (Jammu and Kashmir), (2) litchis in Assam, (8) mandarins in Meghalaya, (7) a pineapple in Tripura, (4) turmeric in Odisha, (3) colourful wooden toys in Karnataka, (6) tea leaves in the Nilgiris and (5) turmeric in Tamil Nadu. The point: GI products are scattered across forested regions, with a cluster in the North-East and the south. Our table carries all eight with their States.
- Glossary: forest-influenced soils — soils shaped over long periods by forest vegetation, roots and leaf litter.
- Let's Explore (p. 38): how GI links geography, culture, local governance and the rural economy; GI products of your State — outlines in the in-text section.
NCERT details to read carefully — GI
- ‘Forest products’ is used loosely: Channapatna toys are a craft made from forest timber, Nilgiri tea and Erode turmeric are farm or plantation produce in forest-influenced settings. Learn them as ‘forest-linked’ GIs.
- The book gives Nilgiri tea three States; check the registered region before quoting it. GI registrations for each product carry their own dates — check the GI Registry.
- UPSC 2010 (trade mark vs GI): the stored key is ‘1 only’ (a GI is a community right). But Section 24 of the GI Act, 1999 says a GI cannot be assigned or licensed, which would make statement 2 true too and the answer ‘1 and 2’. The key is debatable; strategy: the community-right point is safe; on licensing, the Act's text supports ‘a GI cannot be licensed’ — expect either key and don't lose time on it.
- India enacted the GI Act to comply with obligations under the WTO (TRIPS) — UPSC 2018 (not linked here).
8. Challenges for forest dwellers, and the state's response
In simple wordsImagine your home is beautiful but the nearest doctor is a day's walk away, the cooking fire fills the room with smoke, elephants raid your crop and a new rule says you may no longer pick what your grandparents picked. Laws such as the Forest Rights Act try to give such families back a secure claim to the forest they live with.
People living in forests struggle to reach healthcare, education and clean water; women suffer from fuelwood smoke. They depend on forest produce, but restrictions, deforestation and commercial exploitation limit their access — a conflict between conservation laws and survival needs. Forested hills are prone to floods and landslides; forest fires spread fast (FSI: about 36% of India's forest cover is fire-prone, nearly 4% extremely prone), driven by climate change and human factors. Elephants, monkeys and wild boars damage crops and sometimes attack people (human–wildlife conflict). Forest dwellers also face discrimination, sell produce cheaply and need help with processing, marketing, schemes and legal rights. The Forest Rights Act, 2006 (Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act) recognises eligible communities' rights over forest land and resources they have traditionally depended on — collecting minor forest produce such as bamboo, honey and medicinal plants, and ownership of small patches they cultivate. The government also runs scholarships, health and skill programmes, Joint Forest Management (JFM), PESA, DAJGUA and PM JANMAN. At Mendha Lekha (Gadchiroli, Maharashtra), a Gond village that won rights over its forest under the FRA, the Gram Sabha decides everything collectively (‘Mawa Nate Mawa Raj’ — our village, our rule), protects and uses 1,800 ha of forest (regulating felling, preventing fires, harvesting bamboo) and spends the revenue on community welfare.
⤵ How a community gets forest rights under the FRA (Beyond NCERT †, in outline)
Gram Sabha starts the processit invites claims and forms a Forest Rights Committee (UPSC 2013)
Claims are verified on the groundindividual land, community rights, community forest resources
Sub-Divisional Level Committeeexamines the claims and records
District Level Committeeapproves; titles are issued
Community manages the foreste.g. Mendha Lekha: Gram Sabha rules on felling, fire, bamboo
| Law or scheme (book) | What it does (book / †) | Dated fact (Beyond NCERT †, verify) |
|---|---|---|
| Forest Rights Act | recognises rights over forest land and minor forest produce; ownership of small cultivated patches | enacted 2006, in force 2008; bamboo counts as minor forest produce, and dwellers get ownership of MFP (UPSC 2019); Ministry of Tribal Affairs is the nodal ministry |
| Joint Forest Management | communities protect forests and share produce | Union guidelines of 1990, after the National Forest Policy of 1988 |
| PESA | self-rule for Scheduled Areas | 1996; Gram Sabhas in Fifth Schedule areas own minor forest produce (keps208) |
| PM JANMAN | welfare of tribal communities | launched November 2023, for Particularly Vulnerable Tribal Groups |
| DAJGUA | welfare of tribal villages | approved September 2024 |
| PMUY (activity) | cleaner cooking fuel for women | launched May 2016: LPG connections for poor households |
| Forest rights and wildlife conservation (Beyond NCERT attribution) | Who | Position |
|---|---|---|
| Rights first | Tribal and forest-rights organisations; many social scientists | forest dwellers were treated as encroachers on their own land; secure rights make them stewards (Mendha Lekha) |
| Protect habitats strictly | Some wildlife-conservation groups (e.g. petitioners in Wildlife First v. Union of India) | wrongful or excessive claims fragment habitats; rejected claimants should leave protected forests |
| Co-management | Many ecologists and forest managers | rights and conservation can coexist through community forest management with scientific support and monitoring |
| Bare facts | Supreme Court; Parliament | FRA 2006; ‘critical wildlife habitats’ defined in the FRA; a Supreme Court order of 13 February 2019 on evicting rejected claimants was stayed on 28 February 2019 pending review |
Reading the boxes and Figs 2.20–2.22 (pages 38–40)
- Think About It — forest fires with Fig. 2.20: a photograph of tall trees silhouetted against roaring orange flames. The point: fires are a serious, partly human-made hazard; the figures are FSI's. Our bar chart carries them.
- Let's Explore — PMUY: how cleaner cooking fuel helps women's health. Outline in the in-text section.
- Think About It — animals in towns with Fig. 2.21 ‘Forest bridge to avoid roadkill’: an aerial photograph of a highway cutting through dense conifer forest, crossed by a wide, planted bridge for animals. The point: corridors can be rebuilt over roads.
- Box — Mendha Lekha with Fig. 2.22: a villager beside a painted signboard in Marathi, Hindi and English saying, in effect, that the people elect governments in Delhi and Mumbai but are the government in their own village; and a herd of cattle on a forest road (controlled grazing). The point: self-rule plus rules on use conserve the forest.
NCERT details to read carefully — challenges and laws
- Fire figures: the book gives no year — they are from FSI's India State of Forest Report 2019; ‘nearly 4%’ is 4% of all forest cover (about 11% of the fire-prone part †), not 4% of the 36%. Check the latest ISFR before quoting.
- ‘Fundamental rights to participate in governance’ (Mendha Lekha box) is loose: Gram Sabha powers come from PESA, the FRA and the 73rd Amendment, not from Part III of the Constitution. The duty part is right: Article 51A(g) asks citizens to protect forests and wildlife. Safe line: ‘legal and constitutional rights of self-governance’.
- Mendha Lekha was among the first villages to receive community forest rights (2009, Beyond NCERT); its ‘first in India’ status is the book's claim.
- Under the FRA the Gram Sabha — not the forest department or the Collector — starts the process of determining rights (UPSC 2013).
- Fig. 2.21's bridge appears to be abroad (conifer forest); India has built animal underpasses on highways through tiger landscapes (Beyond NCERT — check examples before quoting).
9. Ecological commons: fisheries and tanks
In simple wordsA village pond belongs to no one family, yet everyone needs it. If each takes as much fish as possible and no one clears the silt, the pond dies. If the village agrees rules — who fishes when, who repairs the bund — it lasts for centuries. That shared pond is a ‘commons’.
Ecological commons are natural resources — forests, rivers, lakes, grazing lands, air, biodiversity — shared by a community and used collectively, not owned by one person, and often managed by traditional rules. People have long relied on them for food, water, fuel, fodder and medicine, but population growth, industrial use and privatisation are shrinking them; protecting them matters for livelihoods, ecological balance, climate and biodiversity. Bihar's fisheries: after Independence the Indian Fisheries Act, 1897 still governed inland fisheries; large landowners controlled perennial water bodies and diara waterfronts, marginalising fishing communities. Drawing on the region's history, the Bihar Fish Jalkar Management Act, 2006 (and amendments) promoted community-led management, public access and cooperative stewardship; fish production has grown steadily. Tanks: in seasonal-rainfall regions water was a collective concern — the Chandella and Bundela kings built about 8,000 tanks in Bundelkhand between 800 and 1200 CE (book); keres in Karnataka, eris in Tamil Nadu, cheruvus (book: ‘chevuru’) in Andhra Pradesh and Odisha, ahar–pynes in Bihar, and the Gond kings' katas (three-sided reservoirs) in Gondwana. Official estimates put India's functional tanks at over 15 lakh (book).
Reading Fig. 2.23, Fig. 2.24 and the case-study boxes (pages 41–42)
- Box — Bihar fisheries with Fig. 2.23 ‘Fishermen at work in a maun (lake) at dawn’: two men waist-deep in a calm lake under a pink sky, drawing a net. The point: commons-based management gives fishers secure access.
- Box — tanks: the traditions listed above.
- Fig. 2.24 ‘Water tanks in Bhandara district, Maharashtra’ (from the School Bhuvan–NCERT Geoportal): a satellite image of a patchwork of small fields, roads and a settlement, with a pale, roughly oval patch (a tank bed) in the middle. Let's Explore asks you to spot tanks and the fields they water — look for dark (water) or pale, dried oval patches with an embankment on the downhill side and greener fields below. Bhandara is known as a ‘district of lakes’ for its many old tanks (Beyond NCERT).
NCERT details to read carefully — commons
- Dates: the Chandellas ruled Bundelkhand from about the 9th to the 13th century, but the Bundelas came later (Orchha from the early 16th century — Beyond NCERT). Safe line: ‘Chandella (and later Bundela) rulers built thousands of tanks in Bundelkhand’.
- The heading says ‘Water tanks built by the Gond kings’, but most of the box is about other rulers; the Gonds' contribution is the katas.
- ‘Over 15 lakh functional tanks’ has no source or year. India's first Water Bodies Census (data for 2018–19, report 2023) counted about 24.2 lakh water bodies of all kinds, of which tanks were one type (Beyond NCERT — check which count the book means).
- Telugu tanks are usually spelled cheruvu; the book's ‘chevuru’ is a slip.
- ‘Commons’ do not mean ‘no rules’: the classic worry about over-use applies to open access; long-lasting commons have clear users and agreed rules (Elinor Ostrom's work, Beyond NCERT; kesy203).
In-text questions, Big Questions and activities — answer outlines
The three Big Questions, then every Let's Map, Let's Explore and Think About It box in order.
Big Question 1: How do physiography and climate shape life on Earth?
Temperature (latitude, altitude) and rainfall decide the biome — rainforest, grassland, desert, taiga, tundra; landforms add variety (mountains repeat the climate ladder, rivers and coasts make wetlands and mangroves). Plants adapt (layers, water storage, mosses), animals adapt (thick fur in Nubra camels, humps), and people adapt (herding in deserts, terraces in hills).
Big Question 2: How are humans and other life forms interconnected?
People depend on biomes for food, fuel, fodder, medicine, water and income (NTFPs, GI products, ecotourism); living things shape biomes (pollination, seed dispersal, nutrient recycling); humans modify land (farms, cities) and can conserve it (sacred groves, Chipko, community forests) or degrade it (fires, over-use, fragmentation).
Big Question 3: What is the importance of preserving various life forms, and how can we contribute?
Biodiversity keeps ecosystems healthy, gives food, medicine and genetic resources, regulates climate and water, and supports livelihoods and culture. Contribute: protect hotspots and corridors, respect protected areas, prevent forest fires, support community rights and local products (GI), use resources sparingly, follow ecotourism manners, revive local commons like tanks and groves.
Let's Map (Fig. 2.2): Which type of biome is found in smaller, separate regions, and why?
Tropical rainforest (and temperate deciduous forest) appear as scattered patches — they need very particular combinations of heat and year-round rain, broken up by highlands, rain-shadow areas and oceans; on the map the rainforest is split between the Amazon, the Congo, South-East Asian islands and small coastal pockets.
Let's Map (Fig. 2.2): Which continent has the least number of biomes? What could be the reason?
Antarctica — it is almost entirely ice sheet, so none of the six mapped biomes is shown. Among inhabited continents, Australia (largely desert and grassland, with small forest fringes) has few, because most of it lies in the dry subtropical high-pressure belt.
Let's Map (Fig. 2.2): Why are there areas that do not have any specific biomes?
Ice sheets (Antarctica, Greenland) and very high mountains (Himalaya–Tibet, Andes) have no single biome — conditions change rapidly with height or there is no vegetation; some transitional zones (Mediterranean scrub) are simply not part of the map's six classes.
Let's Explore (Fig. 2.4): Look at the layers of vegetation in a rainforest. What do the yellow shapes indicate?
The amount of sunlight reaching each layer: full at the emergent layer, three-quarters at the upper canopy, half in the understory and a quarter at the forest floor — light decreases downwards (in reality the floor gets only a few per cent).
Let's Explore (Fig. 2.5): Which of these animals will you find in the grasslands of India?
Elephants (Asian elephant, in grassland–forest mosaics such as Kaziranga) and antelopes or gazelles (blackbuck, chinkara); lions only as Asiatic lions in and around Gir (Gujarat). Giraffes and zebras are not native to India. India's grasslands also hold the one-horned rhino, wild buffalo and the great Indian bustard.
Let's Explore (p. 26): What activities do people in desert regions undertake to sustain their households and livelihoods?
Herding camels, goats and sheep; dryland farming of bajra and pulses after rain; crafts (embroidery, leather, pottery); salt-making in the Rann; trade and transport; tourism; and seasonal migration for work.
Let's Explore (p. 26): How do people address issues of water availability?
Harvest rain in tankas/kundis (covered underground tanks), johads and khadins; dig deep wells and baoris; carry water long distances (Fig. 2.6); use canals such as the Indira Gandhi Canal; drip irrigation and water-sparing crops; strict community rules on sharing.
Let's Explore (Fig. 2.7): Compare the Rajasthan camel and the Nubra Valley camel. Why might the Nubra camel have a different fur density?
The Rajasthan camel is a one-humped dromedary with short, thin hair, long legs and a lean body suited to heat; the Nubra camel is a two-humped Bactrian with thick, shaggy fur and a stockier build. Nubra (Ladakh) is a cold desert with freezing winters, so dense fur conserves body heat; in the hot Thar thin hair helps lose heat.
Think About It (p. 27): Why does the polar tundra have mosses and lichens while the subtropical Himalaya has conifers? How do the animals differ, and which are found only in the Himalaya?
The tundra's permafrost, very short growing season and strong winds stop trees; Himalayan slopes at the right heights are colder than the plains but have a longer season and unfrozen soil, so conifers grow (above the tree line, Himalayan meadows look tundra-like). Tundra: reindeer, arctic fox, polar bear; Himalaya: snow leopard, Himalayan tahr, musk deer, red panda, Himalayan monal, yak (domesticated) — many are endemic to the Himalayan region.
Let's Explore (p. 28): Explore your local environment and complete the table (component, examples, interaction with humans).
Example rows: trees — neem, peepal (shade, worship, medicine); insects — bees, mosquitoes (pollination, disease); animals — cows, dogs, monkeys, birds (milk, pets, crop damage); non-living — soil, water, air, buildings (farming, drinking, pollution). Note how people both use and change each.
Let's Map (Fig. 2.10): Mark the Andaman and Nicobar Islands, Kerala, Ladakh, Chhattisgarh, Odisha, Meghalaya and Lakshadweep at appropriate levels. Where will you place your home?
Tropical band: Andaman and Nicobar, Kerala, Meghalaya — wet end (rainforest/tropical evergreen, 7); Chhattisgarh and Odisha — tropical seasonal (deciduous) forest (9); Lakshadweep — tropical, coral islands with coconut and scrub, near the wet end. Ladakh — a cold desert: high altitude makes it ‘temperate-to-polar’ and dry, near the cold, dry side. Place your home by its temperature and rainfall.
Let's Map (Fig. 2.10): There is no arrow on the third side. What would happen if we drew one? Would it point up or down?
The left side runs from the tropical (warm) wet corner to the polar apex. An arrow pointing upwards would show conditions becoming colder with latitude or altitude — and, as the bands shrink, fewer biome types and less biodiversity. (One could also argue for downwards as increasing warmth and variety; explain whichever you draw.)
Let's Map (Fig. 2.13): Mark Namdapha National Park, Rann of Kutch, Gahirmatha beach, Gulf of Mannar, Pachmarhi and Achanakmar–Amarkantak, and discuss their features.
On your own blank map: Namdapha in Arunachal Pradesh (far east); Rann of Kutch in Gujarat (north-west coast); Gahirmatha on Odisha's coast; Gulf of Mannar off Tamil Nadu's south-east coast; Pachmarhi in the Satpura hills of Madhya Pradesh; Achanakmar–Amarkantak on the Madhya Pradesh–Chhattisgarh border. Features: see the table in section 5.
Let's Explore (Thenmala): Is there any such ecotourism site in your State/UT? What should a tourist's behaviour be?
Name a nearby site (a national park, eco-village, community homestay) and who runs it. Behaviour: stay on trails, keep noise low, carry back all waste, avoid plastics, don't feed or disturb animals, hire local guides, buy local products, respect customs and sacred places, follow visitor limits.
Think About It (p. 33): Why are sacred groves so special?
Protected by faith for centuries, they keep old-growth trees, rare and medicinal plants and wildlife that have vanished elsewhere; some guard springs and streams and recharge groundwater; they are living seed banks and cultural heritage — community conservation without fences.
Let's Explore (Fig. 2.18): Identify and classify the items for sale; list food and medicinal varieties in your local market.
Craft: woven bamboo baskets. Food: wild fruits, dried fish. Spice and medicine: turmeric and other roots or tubers. Then list your market's local items under food (greens, millets, fruits, honey) and medicinal (amla, neem, tulsi, giloy).
Let's Explore (p. 38): How does GI tagging connect geography, cultural traditions, local governance and the rural economy? Name GI products from your State.
Geography: soil, climate and forest give the quality. Tradition: skills and recipes passed down. Governance: producer associations or cooperatives register and police the tag. Economy: higher prices, brand protection, rural jobs and tourism. Then name two or three GI products of your State from the GI Registry or Bhuvan.
Think About It (pp. 38-39): Forest fires — a matter of serious concern.
About 36% of forest cover is fire-prone (FSI, 2019). Causes: mostly human (land clearing, collecting mahua or tendu, careless fires) worsened by heat and drought. Effects: loss of trees, wildlife, soil and NTFP income; smoke; homes at risk. Prevention: fire lines, early-warning alerts, community fire watches, controlled burning, awareness.
Let's Explore (p. 39): How are the benefits of PMUY impacting women's health?
LPG replaces firewood and dung cakes, cutting indoor smoke linked to lung and eye diseases; it saves hours spent collecting fuel; it reduces pressure on nearby forests. Benefits depend on families being able to afford refills.
Think About It (p. 39): Which wild animals have you seen in your residential area? Identify the causes behind their presence.
Monkeys, deer, wild boar, leopards, elephants, snakes, peacocks (by region). Causes: shrinking and fragmented habitat, easy food from crops and garbage, loss of water sources, roads cutting corridors, expansion of settlements into forest edges.
Let's Explore (Fig. 2.24): Identify tanks and the fields irrigated by them.
Look for dark or pale oval patches with a straight or curved bund on the downhill side, channels leading away, and greener, more regular fields just below — those are the tank-fed fields.
NCERT questions and activities — answer outlines
Nine questions and activities. Try first, then open.
1. Why does India have diverse biomes? How does the local geography connect to the diversity?
Latitude: India spans about 8°–37° N, tropical in the south and subtropical in the north. Altitude: from sea level to the Himalaya, which repeats the climate ladder up to alpine meadows. Rainfall: from over 1,000 cm (Meghalaya) to under 20 cm (western Rajasthan, Ladakh), giving rainforests, monsoon forests, scrub and deserts. Landforms and water: Western Ghats, deltas and coasts (mangroves), the Rann (salt desert), islands (rainforest, coral). Location: at the meeting point of African, Asian and Malayan life. Result: hotspots, a cold desert, a hot desert, wetlands — all in one country.
2. Make a list of economically valuable native plants in your region and comment on their abundance.
Frame: list 8–10 (e.g. neem, mahua, sal, bamboo, tendu, amla, khejri, coconut, teak, medicinal herbs), their use (food, oil, timber, leaves, medicine, income) and whether they are common, declining or rare — and why (over-harvesting, clearing, planting).
3. Prepare a map of your State or UT showing national parks and sanctuaries.
On a blank outline map in your notebook, mark each national park (one symbol) and sanctuary (another), add a legend, a north arrow and a source note (State forest department or the Wildlife Institute of India database), and colour the forested zones. Comment on where they cluster and why.
4. Study the impact of forest fires on people dependent on forests: causes, losses and preventive measures.
Causes: land clearing, collecting mahua and tendu, careless fires, power lines, dry heat. Losses: NTFP income, fodder, fuelwood, houses and cattle, soil and water, wildlife, health from smoke. Prevention: fire lines, controlled early burning, removing litter near villages, FSI's alert system, watchtowers, trained community fire squads, awareness, safe alternatives for clearing.
5. Why are forests often called the ‘lungs of the Earth’?
They absorb carbon dioxide and release oxygen through photosynthesis, store huge amounts of carbon in wood and soil, cool and moisten the air and help make rain. Note: oceans' phytoplankton make about half of the world's oxygen, so forests matter even more as carbon stores and climate regulators than as oxygen makers.
6. If large forest areas continue to be destroyed, what would be the long-term effect on the global climate?
More CO₂ (burning and decay release stored carbon, and fewer trees absorb it) → stronger global warming; less evaporation from leaves → less rain and drier regions (e.g. the Amazon's rain-making weakens); local heating and changed albedo; more extreme weather, soil erosion, floods and droughts; loss of species that regulate ecosystems — feedbacks that make warming worse.
7. Discuss some traditional forest conservation methods with your grandparents or an elderly person.
Frame: sacred groves; seasonal bans on collecting (e.g. not cutting during flowering); taking only fallen wood; rotational grazing; worship of trees (peepal, banyan, khejri); community forest guards (thengapali in Odisha); planting trees at life events. Record who, where, what rule, and whether it still works.
8. How do forest dwellers contribute to the protection and conservation of forests?
Traditional knowledge of plants and seasons; customs that restrain use (sacred groves, rituals before collection); movements (Bishnoi, Chipko); community forest management and patrols (Mendha Lekha's Gram Sabha rules on felling, fire, grazing, bamboo); fire prevention; JFM committees; FRA-based community forest resource management; women's daily care of forests.
9. What is a forest fire? Prepare a plan for prevention and mitigation of forest fires.
A forest fire is an uncontrolled fire burning through vegetation. Before: map fire-prone areas (FSI), cut fire lines, clear litter near villages, controlled early burning, awareness, ban on careless burning, community fire squads with tools. During: SMS alerts (FSI), watchtowers, quick response teams, evacuate people and cattle. After: assess loss, compensate, replant with native species, study the cause.
Keys and slips to handle with care
- UPSC 1989 (savannas): key ‘Africa’ though Australia also has savannas — debatable; pick the classic answer.
- UPSC 2010 (GI vs trade mark): stored key ‘1 only’, but the GI Act bars licensing a GI — debatable.
- Exercise 5: ‘lungs of the Earth’ is a metaphor; oceans make about half the oxygen (UPSC 2025).
- Book slips: ‘biome pyramid’ (a classification triangle plus a trophic pyramid); hotspot list is regional; Bundela dates; ‘chevuru’; ‘fundamental rights’ to self-governance; undated fire figures; ‘first’ claims for Thenmala and Mendha Lekha are the book's.
⤵ Answer frame for a biome or forest question
Definebiome, ecosystem, biodiversity, commons — one exact line each
Explain with climate and placetemperature, rainfall, altitude, soil; world and Indian examples
Show the human linklivelihoods, NTFPs, GI, ecotourism, sacred groves
Problemsfires, conflict, fragmentation, loss of commons — with dated figures
Responses, side by sideFRA, JFM, PESA, protected areas, community management — positions with authors
What to remember
Numbers
Biomes on the world mapsix: tropical rainforest, grassland, desert, temperate deciduous, taiga, tundra
Fig. 2.1011 numbered types (Desert appears twice); polar to tropical, wet to dry
Tropics23.5° N and S (≈ 23° 26′ †)
RainforestsAmazon, Congo, South-East Asia; smaller: Central America, Andaman and Nicobar, North-East India
Aquatic biomesabout three-fourths of the Earth's surface (oceans ≈ 71% †)
Energy pyramid †10,000 → 1,000 → 100 → 10 units; 0.1% reaches top predators
Hotspots †36 worldwide; India touches 4 (Himalaya, Indo-Burma, Western Ghats–Sri Lanka, Sundaland); ≥1,500 endemic plants and ≥70% habitat lost
Sacred grovesover 1,00,000 in India (estimate); devrai, devarakadu, kavu, sarna
Bishnoi / Chipko †Khejarli, 1730 / Garhwal, 1973
GI8 forest-linked products on Fig. 2.19; GI Act 1999, in force 2003 †
Forest fires≈ 36% of forest cover fire-prone, ≈ 4% extremely (FSI, ISFR 2019 †)
Forest Rights Act2006 (in force 2008 †); rights to forest land and minor forest produce
PESA / JFM †1996 / 1990
Mendha LekhaGadchiroli, Maharashtra; Gond village; 1,800 ha (18 km² †); Mawa Nate Mawa Raj
Bihar fisheriesIndian Fisheries Act 1897 → Bihar Fish Jalkar Management Act 2006
Tanks≈ 8,000 in Bundelkhand (800–1200 CE, book); > 15 lakh functional tanks (book, undated)
One-liners
- A biome is a big climate region of life; an ecosystem is a neighbourhood within it.
- Temperature and rainfall decide the biome; altitude repeats latitude.
- Rainforests: hot, wet, layered, the richest gene bank; light fades towards the floor.
- Grasslands: moderate rain; prairies and steppes farmed, savannas with big animals.
- Deserts are the driest; the tundra the coldest, with permafrost and mosses.
- Energy shrinks up the pyramid — top predators are few and fragile.
- Conservation is geographical: hotspots, protected areas, corridors, locally suited practice.
- Forest dwellers use, know and protect forests — sacred groves, Bishnoi, Chipko, Mendha Lekha.
- A GI tag ties a product's quality to its place and protects the community's name.
- Commons last when the community has clear rules — fisheries, tanks, groves.
Traps to avoid
- ‘Biome pyramid’ = a biome triangle (Fig. 2.10) + a trophic pyramid (text); say ‘ecological pyramid’.
- Energy pyramids are always upright; number and biomass pyramids can be inverted.
- India's formal hotspots are 4: Himalaya, Indo-Burma, Western Ghats–Sri Lanka, Sundaland — no ‘Western Himalaya’.
- Savannas exist in Australia, Brazil and India too, not only Africa.
- Tundra is almost all Arctic; polar bears never live in the Antarctic.
- Oceans' phytoplankton make about half the world's oxygen — ‘lungs of the Earth’ is a metaphor.
- Fire: 4% of all forest cover is extremely prone — not 4% of the 36%.
- Under the FRA the Gram Sabha starts the rights process; bamboo is minor forest produce owned by dwellers.
- Chipko began in 1973 in what was then Uttar Pradesh.
- Bundelas came after 1200 CE; ‘chevuru’ is cheruvu.
How to strategise
Prelims — what UPSC asks
- From this chapter: rainforest regions (1983), taiga (1987), savannas (1989), the most diverse biome (1994), a rainforest described (2021), the food pyramid (1992), India's hotspots (2010), Chipko (1979), the FRA (2013, 2019), GI vs trade mark (2010) and the world's oxygen (2025). Learn the biome table, the hotspot boxes and the FRA flow; then read kegy214 and kegy105.
- Facts that change: protected-area counts, GI registrations, fire figures (ISFR), scheme names and dates — quote with year and check the latest.
Mains — where it appears and how to answer
- GS1: tundra — fragile but economically important (2026), tribal knowledge systems (2021), forest resources and climate change (2020), diversity of India's natural vegetation and sanctuaries in rainforest regions (2023). GS3: how biodiversity varies in India (2018). Use the chapter's climate → biome → people → problems → responses chain.
- On forest rights vs wildlife protection and on ecotourism, set out positions side by side with their authors; give laws and schemes as dated facts.
Self-check
Tap an option. NCERT's own exercise questions come first; the rest test the figures and common confusions.
1. Which of these best describes a biome?
2. Spruce, fir and pine forests are typical of the:
3. In an energy pyramid, which level receives the least energy?
4. Which pair of hotspots covers North-East India and the Nicobar Islands respectively?
5. Under the Forest Rights Act, 2006, who initiates the process of determining forest rights?
6. A Geographical Indication is best described as:
7. According to FSI figures quoted in the book, roughly what share of India's forest cover is fire-prone?
UPSC questions from this chapter
Open any question to attempt it in the Question bank — your attempt is saved to your progress.