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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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← Resource and Development — all chaptersHuman Resources
Start here: why this chapter matters
In simple wordsA field, a river and a hill of iron ore are just scenery until someone farms the field, dams the river and smelts the ore. The ‘someone’ is the real resource. This chapter is about those people: how many there are, where they live, why their numbers change, and what their ages tell us about a country's future.
This is Chapter 5, the last, of NCERT's Class 8 geography book Resource and Development (2024–25 reprint), book pp. 44–53 plus a blank Notes page (11 PDF pages; the QR code reads 0858CH06 — an older numbering, as in hess403). It opens with people as a resource and a box on the Pradhan Mantri Kaushal Vikas Yojana; then the distribution and density of population and the factors behind them; population change through births, deaths and migration; patterns of change (Kenya and the UK); and population composition read from population pyramids of Kenya, India and Japan. Nine figures, comic strips, boxes and four exercises. We use nine concept sections. The book's one map (Fig. 5.5) becomes a table; we draw no maps. Its pyramids have no year or source, so ours are shapes only. Every number we recompute is asserted in the file; anything beyond the book is marked †.
- How this chapter relates to UPSC: it is the first pass over GS1's population geography — distribution and density, the factors behind them, birth and death rates, migration, the demographic transition and the age structure behind the demographic dividend — and GS2/GS3's human-resource and skilling themes. Prelims has asked the definition of density (1991), why the Nile valley is crowded (2001), the order of transition stages (1993, 2012), the dividend (2011, 2013), PMKVY (2018) and ageing societies (2024); Mains asks the dividend and skills, a ‘demographic winter’, migration to big cities and the density of the Ganga basin.
- The senior versions: legy102 (Class 12, The World Population — distribution, density, growth, migration, the transition, Malthus); legy201 (Class 12, India's population — Census 2011 density, growth phases, composition); legy103 (Human Development); keec104 (Class 11 economics, Human Capital Formation); lesy102 (Class 12 sociology, The Demographic Structure of Indian Society).
- In this book: hess401 (Resources) first called people a resource — and set out the debate on that word; hess402 (Land, Soil, Water…) carried the same ‘90% on 30% of land’ line; hess403 (Agriculture) and hess404 (Industries) show what people do with resources.
- UPSC from this chapter: 15 questions — 9 Prelims (1991–2024) and 6 Mains (2014–2025). List at the end; most are shared with legy102, legy201, lesy102 or keec104 within the 3-chapter cap.
| Word | What it means here |
|---|---|
| Human resource | People as a resource — their numbers and qualities (health, education, skills, motivation) |
| Population distribution | The way people are spread across the earth's surface (exercise 2(i)) |
| Population density | The number of people living in a unit area, normally per square kilometre |
| Birth rate / death rate | Live births / deaths per 1,000 people (in a year †) |
| Natural growth rate | Birth rate minus death rate |
| Migration | The movement of people in and out of an area |
| Emigrant / immigrant | A person who leaves a country / who arrives in a country (glossary: emigration, immigration) |
| Life expectancy | The number of years an average person can expect to live (glossary) |
| Population composition | The structure of a population: age, sex, literacy, health, occupation, income |
| Population (age-sex) pyramid | A graph of a population by age group, split into males and females (exercise 2(iv)) |
| Dependents | Young (below 15) and elderly (above 65) people supported by those of working age |
| Demographic dividend † | The growth potential when the working-age share is large — taken up in section 9 |
Reading the chapter opener, the PMKVY ‘Do you know?’ and the comic strip (page 44)
- Opener drawing (colour): a curved orange-red banner of tall, stylised people with raised arms — one with a stethoscope, one in a yellow hard hat, a bald man with glasses holding up a test tube; the number 5, the title and a QR code (0858CH06). The point: people of many occupations are the resource. The same hard-hat man and a woman with a stethoscope recur as page decorations.
- Do you know?: the Pradhan Mantri Kaushal Vikas Yojna (PKVY) started in 2015 to train one crore Indian youth from 2016 to 2020, encouraging employable skills through quality training for probable and existing wage earners. The point: skills turn numbers into a resource. (The scheme's usual name is Pradhan Mantri Kaushal Vikas Yojana, PMKVY — see the trap.)
- Comic strip (two panels): three schoolchildren and a teacher in a green sari — ‘30 children in my class’, ‘500 in my school’, ‘my village has 1,000 people’; the teacher asks how many people the whole world has; a child answers ‘around 6.6 billion’; the teacher asks how to write that in numbers. The point: scale up from the classroom to the world (answer in the in-text section).
At a glance — the six ideas to carry away
- Human resource is the ‘ultimate resource’: people with demands and abilities turn nature into resources. Box: PMKVY (2015) — train one crore youth, 2016–2020.
- Distribution is very uneven: crowded in south and south-east Asia, Europe, north-eastern North America; empty in high latitudes, deserts, high mountains, equatorial forests. Asia + Africa ≈ three-quarters.
- Density = people per sq km: world 51 (book, undated), India 382 (Census 2011). Factors: topography, climate, soil, water, minerals; social, cultural, economic.
- Change = births − deaths (natural growth rate) ± migration. Milestones: 1 bn 1804, 3 bn 1959, 6 bn 1999 — deaths fell, births stayed high.
- Emigrants leave, immigrants arrive; USA, Australia gained, Sudan lost. Kenya: high growth (deaths fell, births high); UK: slow (both low).
- Composition via the age-sex pyramid: Kenya broad base, India broad young ages (‘expanding labour force’), Japan narrow base. Dependents: below 15 and above 65.
1. People as a resource
In simple wordsA box of seeds is not a meal. Someone has to plant, water, harvest, cook — and know how. A country's land and minerals are the seeds; its people, and how healthy, trained and eager they are, decide whether there is a meal at all.
The book's opening claim: people are a nation's greatest resource. Nature's bounty becomes significant only when people find it useful; it is people, with their demands and abilities, who turn things into ‘resources’ — so human resource is the ultimate resource. Healthy, educated and motivated people develop resources as they need them. Like other resources, human resources are not equally distributed; they differ in educational levels, age and sex, and their numbers and characteristics keep changing. Later (p. 49) the book adds that every human being is a potential resource — the researcher, the farmer, the bridge-builder, the singer, the homemaker, the grandparent who tells stories — and (p. 51) that skilled, spirited, hopeful young people must be educated and given skills and opportunities to become productive. The PMKVY box is the policy version of that line.
⤵ How people become ‘the ultimate resource’ (pp. 44, 49, 51)
Numberspeople exist in a place, with demands — food, shelter, work
Qualitieshealth, education, skills and motivation decide what they can do
Usethey find uses for nature's bounty and develop resources as they need them
Investeducation, skills (e.g. PMKVY), opportunities
Resultable, productive people — a resource, not just a headcount
| Is a large population an asset or a burden? — positions side by side († rows; no position endorsed) | Who | Position |
|---|---|---|
| People as the ultimate resource | NCERT (pp. 44, 51) | healthy, educated, motivated people develop resources; India's young people are a resource if educated and skilled |
| Population outruns food † | Thomas Malthus, An Essay on the Principle of Population (1798) — legy102 | population tends to grow faster than food supply, so checks such as famine and disease follow unless births are restrained |
| Pressure drives innovation † | Ester Boserup, The Conditions of Agricultural Growth (1965) | rising population pushes farmers to intensify and adopt new methods |
| Ingenuity as resource † | Julian Simon, The Ultimate Resource (1981) | human ingenuity, not fixed stocks, is the ultimate resource — the phrase the book echoes |
| It depends on age and skills † | the demographic-dividend view (e.g. UNFPA; lesy102, keec104) | a large working-age share helps only with health, education, skills and jobs |
NCERT details to read carefully — people as a resource
- The book's three qualities are healthy, educated and motivated; human resources differ in educational levels, age and sex.
- ‘PKVY’ and ‘Yojna’ in the box: the scheme is the Pradhan Mantri Kaushal Vikas Yojana (PMKVY). It was launched on 15 July 2015 by the Ministry of Skill Development and Entrepreneurship and implemented through the National Skill Development Corporation † — not the Ministry of Labour (UPSC 2018 statement 1, false).
- The ‘one crore youth, 2016–2020’ target in the box is the scheme's second phase (2016–20) †; quote it with the dates.
- Exercise 1(i): people are a resource because they turn nature's gifts into useful things — not merely because they are many.
2. Where the world's people live
In simple wordsAt a picnic, everyone crowds into the shade near the water tap; the sunny, rocky corner stays empty. Humanity does the same on a global scale: most people squeeze onto the comfortable, watered, fertile parts of the planet and leave huge areas almost empty.
The way people are spread over the earth's surface is the pattern of population distribution. It is extremely uneven: more than 90% of the world's people live on about 30% of the land surface. Crowded areas: south and south-east Asia, Europe and north-eastern North America. Very few people live in high latitudes, tropical deserts, high mountains and equatorial forests. Many more people live north of the Equator than south of it. Almost three-quarters of the world's people live in two continents, Asia and Africa. Sixty per cent live in just 10 countries, each with more than 100 million people (Fig. 5.2).
| Fig. 5.2's ten most populous countries, in the book's order (no values printed; source: Census of India 2011, Provisional Population Totals) | Country | Continent | In Asia? |
|---|---|---|---|
| 1 | China | Asia | yes |
| 2 | India | Asia | yes |
| 3 | USA | North America | no |
| 4 | Indonesia | Asia | yes |
| 5 | Brazil | South America | no |
| 6 | Pakistan | Asia | yes |
| 7 | Bangladesh | Asia | yes |
| 8 | Nigeria | Africa | no |
| 9 | Russian Federation | Europe and Asia | partly (Europe and Asia) |
| 10 | Japan | Asia | yes |
| Crowded and empty — the book's lists (no map) | Areas | Why (from section 4) |
|---|---|---|
| Crowded | south and south-east Asia; Europe; north-eastern North America | plains, fertile soils, water, industry, cities |
| Very sparse | high latitudes; tropical deserts; high mountains; equatorial forests | cold, dryness, steep land, dense forest and heat |
| By hemisphere | many more people north of the Equator | most land, and most farmland, lies north of the Equator † |
Reading Fig. 5.1, Fig. 5.2 and the activity (page 45)
- Fig. 5.1, ‘World population by continents’: a panel headed ‘Of every 100 people in the world…’ with 100 small human icons in ten rows, coloured by continent — yellow for Asia, orange for Europe, purple for Africa, blue for Central and South America, red for Northern America, green for Oceania (Australia, New Zealand and the Pacific islands). Our count: 61, 12, 13, 8, 5 and 1. No year or source. The point: Asia alone holds well over half the world's people.
- Activity: from Fig. 5.1, which continent has 5%, 13%, 1%, 12%? Answers in our grid: Northern America, Africa, Oceania, Europe.
- Fig. 5.2, ‘World's most populous countries’: a horizontal bar chart, population in million (0 to 1,600), China longest, then India, far ahead of the USA and the rest down to Japan; caption: locate and label them on an outline map of the world; source line: Census of India 2011, Provisional Population Totals, Paper 1. The point: two countries dwarf all others. (We give the order, not values read off bars.)
Beyond NCERT — the numbers today (bare facts)
- The UN marked the world reaching 7 billion on 31 October 2011 and 8 billion on 15 November 2022.
- UN DESA estimated that India overtook China as the most populous country in April 2023.
- Census of India 2011: 1,210.85 million people; decadal growth 2001–11 17.64%; density 382 per sq km (legy201 has the state-wise picture).
- The UN's World Population Prospects 2024 put the world at about 8.2 billion in 2024 and projects a peak of about 10.3 billion in the mid-2080s (legy102).
NCERT details to read carefully — distribution
- ‘90% on 30% of land’ (this book, and hess402) vs ‘90% on about 10% of land’ (Class 12 NCERT, legy102). Safe line: ‘most of the world's people live on a small fraction of its land’.
- Fig. 5.2 has six Asian countries — China, India, Indonesia, Pakistan, Bangladesh, Japan; Russia spans Europe and Asia (seven if counted).
- The comic's ‘6.6 billion’ is about the 2007 figure, while Fig. 5.2's source is 2011 and Fig. 5.3 projects 8,525 million for 2025 — three different dates in one chapter. Quote a population with its year.
- Exercise 2(i): distribution = (c) the way people are spread across an area — not change over time, not births against deaths.
3. Density: how crowded a place is
In simple wordsThirty friends in a small room feel packed; the same thirty in a football ground look lost. Nobody joined or left — only the space changed. Density is just that: how many people share each piece of land.
Population density is the number of people living in a unit area of the earth's surface, normally expressed per square kilometre. The book gives the average density of the whole world as 51 persons per sq km; South Central Asia has the highest density, followed by East and South East Asia. A ‘Do you know?’ gives India's average density as 382 persons per sq km (the Census 2011 figure). A cartoon makes the idea concrete: 30 students crowd their classroom but look scattered in the assembly hall, because the hall's area is much larger — until the whole school arrives and the hall is crowded too. The book also warns (p. 49) that how crowded a country is has little to do with its level of development: Bangladesh and Japan are both very densely populated, yet Japan is far more developed.
Reading the density ‘Do you know?’, the cartoon and the Fig. 5.2 activity (page 46)
- Do you know?: India's average density is 382 persons per sq km. The point: India is about 7½ times as crowded as the book's world average (our arithmetic).
- Cartoon: a boy in a checked shirt and a girl in pink talk in speech bubbles — why does the full class feel crowded in the classroom but open in the hall? Because the hall is much larger; with the whole school inside, the hall looks crowded too. The point: density depends on both people and area.
- Activity: of Fig. 5.2's countries, how many are in Asia? Colour them on a world map. Answer: six (seven with Russia); we give a list, not a map.
NCERT details to read carefully — density
- Density is per square kilometre of land area (UPSC 1991: ‘persons per sq km of land area’, not per km or per village).
- The world figure 51 has no year; it fits a world of roughly six to seven billion people. Do not set it against India's 2011 figure as if the two were the same year.
- Physiological density (people per unit of arable land) and agricultural density are Class 12 ideas (legy102) — this book uses only arithmetic density.
- Dense ≠ developed: Bangladesh and Japan are both dense; Japan is far more developed.
4. Why people live where they do
In simple wordsChoosing where to live is like choosing a seat on a train: you want space, a window, a socket for your phone and a short walk to the door. Flat land, a mild climate, good soil, fresh water and jobs are the ‘window seats’ of the planet — and they fill up first.
The book groups the factors affecting distribution in two sets. Geographical: Topography — people prefer plains to mountains and plateaus because plains suit farming, manufacturing and services; the Ganga plains are among the most densely populated areas of the world, while the Andes, Alps and Himalayas are sparse. Climate — people avoid extremes, such as the Sahara, the polar regions of Russia and Canada, and Antarctica. Soil — fertile plains such as the Ganga and Brahmaputra in India, the Huang He (book: ‘Hwang-He’) and Chang Jiang in China and the Nile in Egypt are densely populated. Water — people settle where fresh water is easy to get; river valleys are dense, deserts sparse. Minerals — the diamond mines of South Africa and oil in the Middle East drew settlers. Social, cultural and economic: Social — better housing, education and health facilities, e.g. Pune; Cultural — places of religious or cultural significance, e.g. Varanasi, Jerusalem, Vatican City; Economic — industrial areas offer jobs, e.g. Osaka in Japan and Mumbai in India.
⤵ Why the Ganga plains are so crowded — the book's factors in a chain
Flat landtopography suits farming, building, roads and services
Fertile soilalluvial plains of the Ganga and Brahmaputra feed many people
Fresh waterrivers and groundwater for crops and homes
Farming surplusdense villages, then market towns and cities
Social pullschools, hospitals, housing in towns
Cultural and economic pullpilgrim centres such as Varanasi; industry and jobs
NCERT details to read carefully — factors
- Five geographical factors (topography, climate, soil, water, minerals) and three social-cultural-economic ones.
- ‘The Ganga plains are the most densely populated areas of the world’ overstates it — safe line: ‘among the most densely populated’.
- The Nile valley and Java are dense chiefly because fertile soils and water support intensive agriculture (UPSC 2001), not industry.
- Exercise 3: when people are attracted to an area it becomes densely populated; factors include favourable climate, good supplies of natural resources and fertile land.
- Pune (social), Varanasi (cultural) and Mumbai (economic) are the book's Indian examples — match them to the right factor.
5. Population change: births, deaths and the great acceleration
In simple wordsThink of a water tank with a tap filling it (births) and a leak draining it (deaths). For most of history both ran fast, so the level barely rose. Then medicine and better food plugged much of the leak while the tap kept running — and the tank began to fill at speed.
Population change is the change in the number of people over a specific time. The world population has increased manifold (Fig. 5.3) because of changes in births and deaths. Until the 1800s it grew steadily but slowly: many babies were born but many died early, as there were no proper health facilities and not enough food. In 1804 the world reached one billion; 155 years later, in 1959, three billion — often called the population explosion; in 1999, 40 years later, it doubled to six billion. The main reason: with better food supplies and medicine, deaths fell while births stayed fairly high. The birth rate is the number of live births per 1,000 people; the death rate the number of deaths per 1,000. Births and deaths are the natural causes of change; the difference between them is the natural growth rate, and the world's increase is mainly due to its rapid rise. A glossary defines life expectancy: the number of years an average person can expect to live.
⤵ Why the world's population exploded (p. 47)
Before the 1800smany births, many early deaths; poor health care and too little food — slow growth
Changebetter food supplies and medicine
Deaths fallwhile births stay fairly high
Natural growth risesthe gap between birth and death rates widens
Milestones1 billion in 1804, 3 billion in 1959, 6 billion in 1999
| Fig. 5.3 in numbers (book's labels, million) — our arithmetic | From → to | Change |
|---|---|---|
| Ancient to early modern | 100 (500 BC) → 900 (1800) | about ×9 in some 2,300 years |
| Nineteenth century | 900 (1800) → 1,625 (1900) | less than double |
| Twentieth century | 1,625 (1900) → 6,000 (1999) | about ×3.7 |
| The last quarter-century shown | 4,000 (1974) → 6,000 (1999) | +50% in 25 years |
| Projection | 8,525 (2025) | UN: about 8.2 billion in 2024 † — the book's projection runs high |
Reading the life-expectancy glossary and Fig. 5.3 (page 47)
- Glossary: life expectancy — the number of years an average person can expect to live.
- Fig. 5.3, ‘World Population Growth’: columns of small blue human icons over ten date labels — 500 BC, 0, 1000, 1500, 1800, 1900, 1950, 1974, 1999, 2025 — each column topped by its value: 100, 170, 265, 425, 900, 1,625, 2,500, 4,000, 6,000 and 8,525 million. The columns are equally spaced, so the steep rise at the right is partly an effect of bunching recent dates together. The point: almost all growth is recent (our bar chart redraws the values).
NCERT details to read carefully — population change
- Milestones: 1 bn 1804, 3 bn 1959, 6 bn 1999 (exercise 2(iii): (c) 6 billion). The UN usually dates 3 billion to 1960 † — a one-year difference; both appear in books.
- ‘Population explosion’ refers to the rapid growth after deaths fell — not to one year.
- The fall in deaths, not a rise in births, drove the explosion.
- Birth and death rates are per 1,000 people, not per cent; natural growth rate = birth rate − death rate (UPSC 1992 reads a falling gap from a graph as falling growth).
- Fig. 5.3 labels a year ‘0’: the calendar has no year zero (1 BC is followed by AD 1) †. The 2025 bar is a projection.
6. Migration: the third way numbers change
In simple wordsA class's strength changes not only when new children are born into the town but also when a family moves in from another city or moves away. Countries are the same: people arriving and leaving can change the total as much as births and deaths.
Fig. 5.4 shows the balance of population: if the birth rate is more than the death rate, population increases; if they are the same, it stays steady; if deaths exceed births, it decreases. Migration is another way population size changes. People may move within a country or between countries. Emigrants leave a country; immigrants arrive. The USA and Australia have gained numbers by in-migration (immigration); Sudan has lost numbers by out-migration (emigration). The general trend of international migration is from less developed to more developed nations in search of better jobs. Within countries, many people move from rural to urban areas for employment, education and health facilities.
⤵ Why people move (p. 48)
Within a countryrural to urban: jobs, education, health facilities
Between countriesless developed to more developed: better jobs
Receiving countrygains numbers by immigration — USA, Australia (book)
Sending countryloses numbers by emigration — Sudan (book)
Net effectpopulation change = natural growth + immigrants − emigrants
Reading Fig. 5.4 and the migration glossary (page 48)
- Fig. 5.4, ‘Balance of Population’: three coloured panels, each a balance scale with an arrow on top. Yellow — the ‘birth rate’ pan of smiling blue faces sinks below the ‘death rate’ pan of red faces: population increase. Pink — the pans level: population steady. Blue — the ‘death rate’ pan of sad faces sinks: population decrease. The point: the heavier pan wins (our seesaws are original).
- Glossary: immigration — when a person enters a new country; emigration — when a person leaves a country.
Beyond NCERT — migration facts to quote carefully
- Sudan split in 2011, when South Sudan became independent; the book's ‘Sudan’ example predates or ignores this — name the year if you use it.
- Push factors (unemployment, poverty, conflict, disaster) and pull factors (jobs, services, safety) are developed in legy102; India's migration streams (rural-urban, urban-urban…) in legy201.
- UPSC Mains 2024 asked why large cities attract more migrants than small towns — start from the book's ‘employment, education and health facilities’, then add agglomeration, wages and networks (legy102).
NCERT details to read carefully — migration
- Emigrant = exits; immigrant = comes in.
- Exercise 2(ii): the three factors of change are births, deaths and migration — not marriage or life expectancy.
- Births and deaths are natural causes; migration is not.
- For the world as a whole, migration cancels out: only births and deaths change the total †.
7. Patterns of change: fast, slow and falling
In simple wordsTwo families: in one, a new baby arrives every couple of years and grandparents are rare; in the other, there is one child and four grandparents at the dinner table. Whole countries look like one family or the other — and many move from the first to the second over a few generations.
Rates of population growth vary across the world (Fig. 5.5). The world total is rising rapidly, but not every country is growing. Some, like Kenya, have high growth rates: they had high birth and death rates; with better health care, death rates have fallen but birth rates remain high, so growth is high. In others, like the United Kingdom, growth is slowing because both birth and death rates are low. This is the logic of the demographic transition, which Class 12 NCERT (legy102) sets out in three stages: high and fluctuating rates; an expanding stage when deaths fall first; and low, fluctuating rates.
| Fig. 5.5 as a table — the map's five classes of annual natural increase (map undated; examples are our reading of it) | Class | Rate | Where the map shows it (broadly) |
|---|---|---|---|
| 1 | Very high | 3% or more | parts of West and Central Africa; the Arabian Peninsula |
| 2 | High | 2–2.9% | most of the rest of Africa (including Kenya); Pakistan; Mexico and Central America; parts of South America |
| 3 | Moderate | 1–1.9% | India; Brazil; southern Africa |
| 4 | Low | 0.9% or less | the USA and Canada; China; Australia |
| 5 | Zero or decrease | 0 or less | much of Europe; Russia |
Reading Fig. 5.5 (page 49)
- Fig. 5.5, ‘World: Differing rates of population growth’: a world map with lines of latitude and longitude, coloured in five classes of annual natural increase — dark blue very high (3% or more), pink high (2–2.9%), pale green moderate (1–1.9%), pale yellow low (0.9% or less), white zero or decrease. Africa and West Asia are mostly pink or blue; Europe and Russia mostly white. No year or source is printed. The point: growth is fastest in the poorest regions and has stopped in parts of the richest. (We give the classes as a table and draw no map.)
Beyond NCERT — today's slow-growth countries
- UPSC 2024 Prelims named Italy, Japan and South Korea as countries in the news for low birth rates, ageing or decline — the UK-type and Japan-type patterns of this chapter, taken further.
- A ‘demographic winter’ (UPSC Mains 2024) is a long period of very low fertility, ageing and shrinking population — the narrow-based pyramid of Fig. 5.9 sustained over decades (legy102, lesy102).
NCERT details to read carefully — patterns
- Transition order (UPSC 1993, 2012): high births and high deaths → high births and low deaths → low births and low deaths.
- Kenya's high growth comes from falling deaths with births still high, not from rising births.
- The UK's growth is slowing, not necessarily negative.
- Fig. 5.5 is undated and shows natural increase (births − deaths), not total growth with migration.
8. Population composition: who the people are
In simple wordsTwo schools each have 1,000 students. One is mostly little children needing teachers and playgrounds; the other mostly seniors needing labs and career advice. Same number, very different needs. Composition is the ‘who’ behind the ‘how many’.
How crowded a country is has little to do with its development: Bangladesh and Japan are both very dense, but Japan is far more developed. To understand people as a resource we must know their qualities: they differ in age, sex, literacy level, health condition, occupation and income level. Population composition is the structure of the population: how many are male or female, which age group they belong to, how educated they are, what occupations they follow, and what their income and health are. A cartoon asks the reader to think about it personally: every human being is a potential resource — what will your contribution be?
| Composition: the book's six qualities and why a planner cares († column is ours) | What it tells us | Example use † |
|---|---|---|
| Age | children, working age, elderly | schools vs jobs vs pensions |
| Sex | males and females in each age group | health services; gender gaps |
| Literacy | how educated people are | skill programmes; schools |
| Health | how fit people are to work and learn | hospitals; nutrition |
| Occupation | what work people do | jobs policy; farm or factory |
| Income | what people earn | poverty relief; demand |
Reading the ‘Think’ cartoon (page 49)
- Six people in one colourful drawing, each with a speech bubble: an older woman in a red sari (‘I tell stories to my grandchildren’), a man in a blue hard hat with plans (‘I build bridges’), a young man with music notes (‘I sing at weddings’), a woman in a green sari (‘I take care of my home’), a woman in a lab coat (‘I am researching for medicines to cure cancer’) and a turbaned man with a stick (‘I am a farmer’). Caption: every human being is a potential resource for society — what will your contribution be? The point: paid and unpaid, skilled and traditional work all count (in-text answer below).
Beyond NCERT — India's composition (bare facts)
- Census 2011: sex ratio 943 females per 1,000 males; child sex ratio (0–6) 918 (legy201).
- The age, literacy and occupational composition of India's people is the subject of legy201 and lesy102; human capital — investment in education and health — of keec104.
NCERT details to read carefully — composition
- Composition = structure of a population (exercise 1(v)) — not its size or its spread.
- The book lists six qualities: age, sex, literacy, health, occupation, income.
- Density and development are different things — the Bangladesh–Japan pair.
9. Population pyramids and the young-old balance
In simple wordsStack the people of a country by age like books on a shelf — babies at the bottom, the oldest at the top, boys on the left, girls on the right. If the bottom shelves are crammed and the top ones nearly empty, the country is young; if the bottom is thin and the top full, it is ageing. One glance tells the story.
A population pyramid, or age-sex pyramid, shows the total population divided into age groups (e.g. 5–9, 10–14 years) and the percentage of the total in each group, split into males and females (Fig. 5.6). The bottom shows children (below 15) and reflects the level of births; the top shows the aged (above 65) and reflects deaths. It also shows the dependents: young dependents (below 15) and elderly dependents (above 65); those of working age are, in the book's words, the economically active. Three shapes: where birth and death rates are both high, the pyramid is broad at the base and narrows rapidly — many are born, many die in infancy, few reach old age (Kenya, Fig. 5.7). Where death rates, especially of the very young, are falling, the pyramid is broad in the younger groups because more infants survive to adulthood — a large young population and a strong, expanding labour force (India, Fig. 5.8). Where birth rates are low, the pyramid is narrow at the base, and lower death rates let many reach old age (Japan, Fig. 5.9). The chapter ends: skilled, spirited and hopeful young people are the future of any nation; India is fortunate to have them, and they must be educated and given skills and opportunities.
| The book's three pyramids compared | Kenya (Fig. 5.7) | India (Fig. 5.8) | Japan (Fig. 5.9) |
|---|---|---|---|
| Births | high | still fairly high (falling †) | low |
| Deaths | high (book, p. 51) | falling, especially of the very young | low |
| Shape | broad base, narrows rapidly | broad in the younger groups | narrow base; many reach old age |
| Dependents | many young | many young; a large working age to come | many elderly |
| What it means (book) | few adults, very few old people | a strong and expanding labour force | people live long |
⤵ Reading any population pyramid in four steps (pp. 50–51)
Look at the basewide = many births; narrow = few births
Look at the sidesfast narrowing = many deaths at young ages; straight sides = most survive
Look at the topwide = many elderly, long lives; thin = few reach old age
Count dependentsbelow 15 and above 65 — who must be supported
Planschools and jobs for a young country; pensions and care for an old one
| Exercise 4 — ‘too many under 15s’ vs ‘too few under 15s’ (book's hints in bold) | Too many under 15s | Too few under 15s |
|---|---|---|
| Schools and teachers | great demand; more schools and teachers | schools close or merge; fewer teachers needed |
| Toys, children's goods | big market | shrinking market |
| Hospitals | child and maternal care | geriatric care; long-term illness |
| Labour supply | large future workforce — jobs must be created | shrinking workforce; labour shortage |
| Pension schemes, wheel chairs | fewer old people to support | many retirees; pensions and aids for the elderly |
| Dependency | high young dependency | high elderly dependency |
Reading Fig. 5.6 and the two comic dialogues (page 50)
- Fig. 5.6, ‘Population Pyramid’: a smooth pyramid of blue (male, left) and red (female, right) bars, ages 0–4 at the bottom to 85+ at the top, per cent on the horizontal axis (up to about 10); two horizontal lines mark the 15 and 65 boundaries. No country, year or source. Its age labels contain a slip: after 15–19 come ‘30-24’ and ‘35-39’ where 20–24 and 25–29 should be (see the trap).
- Dialogues: a boy in green asks what the triangular diagram is — ‘a population pyramid’, says the girl; it shows the number of males and females in a country with their age groups; ‘Can I play detective and investigate the population of a country?’ — ‘Sure, let's study three countries.’ The point: a pyramid can be read like a clue.
Reading Figs 5.7–5.9 (page 51)
- Fig. 5.7, ‘Population Pyramid of Kenya’: purple (male) and orange (female) bars; very wide at 0–4 (near 10% each side), tapering sharply to almost nothing at 75+.
- Fig. 5.8, ‘Population Pyramid of India’: wide and nearly even across the lowest groups, then tapering steadily upward.
- Fig. 5.9, ‘Population Pyramid of Japan’: narrow at the base, widest in the middle-aged groups, with substantial bars up into old age; the same ‘30-24’ / ‘35-39’ label slip as Fig. 5.6.
- None of the three carries a year or source. The point: three stages of the transition in three shapes (our diagram draws the shapes, not the values).
Beyond NCERT — dependency and the dividend
- Dependency ratio = (people aged 0–14 + 65 and over) ÷ people aged 15–64, × 100 — the standard definition built on the book's two dependent groups (legy201, lesy102).
- Demographic dividend: the growth potential when the working-age (15–64) share is high and dependency low (UPSC 2011). Realising it needs skills, health and jobs (UPSC 2013: skill development; Mains 2014, 2016, 2023) — the book's closing line.
- Some Indian data use 60 rather than 65 as the start of old age (e.g. the Census's 60+ group) — check the cut-off before comparing.
NCERT details to read carefully — pyramids
- Kenya inconsistency: p. 48 says Kenya's death rates have fallen with better health care; p. 51 uses Kenya's pyramid as the case where both birth and death rates are high. Safe line: ‘a broad-based, fast-narrowing pyramid shows high birth and death rates (as in Kenya's in the book)’.
- Age-label slip in Figs 5.6 and 5.9: ‘30-24’ and a repeated ‘35-39’ stand where 20–24 and 25–29 belong.
- Young dependents are below 15; elderly above 65; working age 15–64. Not everyone of working age is ‘economically active’ — students, homemakers and the unemployed are not counted as workers †.
- A pyramid shows age and sex (exercise 2(iv) → (a)) — not density, not tall buildings.
- India's ‘demographic dividend’ comes from its large 15–64 group (UPSC 2011: (b)), not from the under-15s or the total size.
In-text questions and activities — answer outlines
Every question, activity and ‘Think’ in the text, in page order.
(p. 44) Comic: the world has around 6.6 billion people. How do you write that in numbers?
6,600,000,000 — six thousand six hundred million; in the Indian system 660 crore (6,60,00,00,000). (The world passed 8 billion in November 2022 †.)
(p. 45) Activity: Study Fig. 5.1 — of the world's total population, which continent has (a) only 5 per cent (b) only 13 per cent (c) only 1 per cent (d) only 12 per cent?
(a) Northern America; (b) Africa; (c) Oceania (Australia, New Zealand, Pacific islands); (d) Europe. The rest: Asia 61, Central and South America 8 (our count of the icons).
(p. 45) Fig. 5.2: Locate and label these countries on the outline map of the world.
Use an atlas and an outline map (we draw no maps). By continent: Asia — China, India, Indonesia, Pakistan, Bangladesh, Japan; North America — USA; South America — Brazil; Africa — Nigeria; Europe and Asia — Russian Federation.
(p. 46) Activity: Look at Fig. 5.2 — of these countries, how many are in Asia? Colour them on a world map.
Six: China, India, Indonesia, Pakistan, Bangladesh, Japan. Russia lies in both Europe and Asia — seven if you count it. Colouring is a map exercise for your atlas.
(p. 46) Cartoon: When all 30 students are present, the classroom seems very crowded, but in the school assembly hall the same class seems open and empty. Why?
The number of people is the same but the hall's area is much larger, so the density (people per unit area) is lower. When the whole school fills the hall, the number rises and the hall looks crowded too. Density = people ÷ area.
(p. 49) Think: Every human being is a potential resource for the society. What will be your contribution as a human resource?
Name a skill or role and how it serves others: e.g. as a teacher, doctor, engineer, farmer, artist, entrepreneur, caregiver. Add how you will build it — study, health, training — and that unpaid work (care, community service, passing on stories and knowledge) also counts, as the cartoon shows.
(p. 50) Dialogue: What is this triangular-looking diagram, and what does it show?
A population (age-sex) pyramid: the number or percentage of males and females in each age group of a country — children at the base, the elderly at the top.
Exercises (pages 52–53) — answer outlines
Four exercises: short answers, multiple choice, a fill-in and a discussion activity. Try first, then open.
1(i). Why are people considered a resource?
Nature's gifts become useful only when people, with their demands and abilities, find a use for them. Healthy, educated, skilled and motivated people develop resources — so human resource is the ultimate resource. Example: skills training (PMKVY) makes youth productive.
1(ii). What are the causes for the uneven distribution of population in the world?
Geographical: topography (plains vs mountains), climate (extremes avoided), soil (fertile plains), water (river valleys vs deserts), minerals (mining areas). Social, cultural, economic: housing, education and health (Pune); religious or cultural centres (Varanasi, Jerusalem, Vatican City); industry and jobs (Osaka, Mumbai).
1(iii). The world population has grown very rapidly. Why?
With better food supplies and medicine, death rates fell while birth rates stayed fairly high, so the natural growth rate rose sharply: 1 billion (1804) → 3 billion (1959) → 6 billion (1999).
1(iv). Discuss the role of any two factors influencing population change.
Births and deaths: their difference is the natural growth rate — high births with falling deaths (Kenya) mean fast growth; low births and deaths (UK) mean slow growth. Migration: immigration adds (USA, Australia), emigration subtracts (Sudan); within countries people move from rural to urban areas.
1(v). What is meant by population composition?
The structure of a population — the numbers of males and females, age groups, literacy, health, occupation and income. It shows what kind of resource a population is, not just its size.
1(vi). What are population pyramids? How do they help in understanding about the population of a country?
A graph of the population by age group and sex. The base reflects births, the top deaths and longevity; the shape shows the number of young and elderly dependents and the working-age group. Kenya's broad base (high births and deaths), India's broad young groups (an expanding labour force), Japan's narrow base (low births, many old) — each tells planners what schools, jobs, hospitals or pensions are needed.
2(i). Which does the term population distribution refer to? (a) How population in a specified area changes over time (b) The number of people who die in relation to the number born in a specified area (c) The way in which people are spread across a given area
(c).
2(ii). Which are three main factors that cause population change? (a) births, deaths and marriage (b) births, deaths and migration (c) births, deaths and life expectancy
(b) births, deaths and migration.
2(iii). In 1999, the world population reached (a) 1 billion (b) 3 billion (c) 6 billion
(c) 6 billion.
2(iv). What is a population pyramid? (a) A graphical presentation of the age, sex composition of a population (b) When the population density is so high that people live in tall buildings (c) Pattern of population distribution in large urban areas
(a).
3. Complete using some of: sparsely, favourable, fallow, artificial, fertile, natural, extreme, densely — When people are attracted to an area it becomes ___ populated. Factors that influence this include ___ climate; good supplies of ___ resources and ___ land.
densely; favourable; natural; fertile. (Sparsely, fallow, artificial and extreme are distractors.)
4. Activity: Discuss the characteristics of a society with ‘too many under 15s’ and one with ‘too few under 15s’. (Hint: schools, pension schemes, teachers, toys, wheel chairs, labour supply, hospitals.)
Too many under 15s (Kenya-type): need for many schools, teachers, child health care and toys; high young dependency; a big future labour supply that needs jobs. Too few under 15s (Japan-type): schools close, demand shifts to pensions, wheel chairs, elderly care and hospitals; a shrinking labour supply and high elderly dependency. See the table in section 9.
Reading the exercise pages and the web-source list (pages 52–53)
- Exercises 1–3 sit in a blue brick-patterned frame with a cartoon of two smiling red flowers; exercise 4 (the under-15s activity) in a second frame on p. 53.
- Some Internet Sources for More Information: seven addresses (ndmindia.nic.in, environmentdefense.org, freefoto.com, worldgame.org/worldmeters, cseindia.org, mnes.nic.in, undp.org/popin). The point: further reading — but several are dated (the MNES ministry was renamed MNRE in 2006 †), so prefer the UN's population pages and the Census of India for figures.
- Page 54 is a blank ‘Notes’ page.
Keys and slips to handle with care
- Exercise keys: 2(i) (c); 2(ii) (b); 2(iii) (c); 2(iv) (a); 3: densely, favourable, natural, fertile.
- Book slips with safe lines: ‘6.6 billion’ (about 2007) — quote a population with its year; 3 billion in 1959 (UN: 1960); ‘90% on 30% of land’ (Class 12: about 10%); the undated world density of 51; ‘the most densely populated’ Ganga plains (‘among the most’); Kenya as both falling-death and high-death example; working age = ‘economically active’; ‘30-24’/‘35-39’ labels; ‘PKVY’/‘Yojna’ (PMKVY); QR 0858CH06 on Chapter 5; ‘sparely’, ‘bothe’, ‘Hwang-He’ (Huang He); dated web links.
- Stored UPSC keys: all checked keys agree with standard sources. 1992 (birth and death rates from a graph): the graph is not in our data, so key (c) ‘growth rate has decreased’ cannot be checked here — kept for the concept. None of the pending key issues applies.
⤵ Answer frame for a GS question on population or human resources
Definedensity, growth, migration, composition or dividend — with a dated figure and its source (e.g. Census 2011; UN WPP 2024)
Patternwhere and how fast — uneven distribution; Kenya-type, India-type, Japan-type
Causesgeographical and social-cultural-economic factors; births, deaths, migration
Consequencesdependency, labour supply, services, cities
Viewsasset vs burden — attributed side by side
Way forwardhealth, education and skills that make people a resource — with no comment on any present-day party or government
What to remember
Numbers
ChapterClass 8, Resource and Development, Ch. 5, book pp. 44–53 (+ Notes p. 54; 11 PDF pages); QR 0858CH06; 2024-25 reprint
PMKVY (book box)started 2015; train 1 crore youth, 2016–2020; launched 15 July 2015 by MSDE †
World population (comic)‘around 6.6 billion’ = 6,600,000,000 = 660 crore (about 2007)
Fig. 5.1 (our count)Asia 61, Africa 13, Europe 12, Central and South America 8, Northern America 5, Oceania 1
Distribution (book)> 90% of people on about 30% of land (Class 12: about 10%); Asia + Africa ≈ three-quarters; 60% in 10 countries of > 100 million
Fig. 5.2 orderChina, India, USA, Indonesia, Brazil, Pakistan, Bangladesh, Nigeria, Russia, Japan — 6 in Asia
Densityworld 51/sq km (book, undated); India 382/sq km (Census 2011) — about 7½ times
Highest density regions (book)South Central Asia, then East and South East Asia
Factorsgeographical 5: topography, climate, soil, water, minerals · social, cultural, economic 3
Milestones (book)1 bn 1804 → 3 bn 1959 (155 years) → 6 bn 1999 (40 years)
Milestones (UN †)3 bn 1960; 7 bn 31 October 2011; 8 bn 15 November 2022; about 8.2 bn in 2024; peak about 10.3 bn mid-2080s
Fig. 5.3 (million)100 (500 BC), 170 (0), 265 (1000), 425 (1500), 900 (1800), 1,625 (1900), 2,500 (1950), 4,000 (1974), 6,000 (1999), 8,525 (2025, projected)
Ratesbirth rate and death rate per 1,000 people; natural growth rate = birth rate − death rate
Migration (book)gainers: USA, Australia; loser: Sudan; trend: less → more developed; rural → urban
Fig. 5.5 classesvery high ≥ 3%; high 2–2.9%; moderate 1–1.9%; low ≤ 0.9%; zero or decrease
Pyramid agesyoung dependents < 15; working age 15–64; elderly > 65
India, Census 2011 †1,210.85 million; growth 2001–11 17.64%; sex ratio 943
Thinkers †Malthus 1798; Boserup 1965; Julian Simon, The Ultimate Resource 1981
One-liners
- Human resource is the ultimate resource: people make nature useful.
- More than 90% of people live on a small part of the land; Asia and Africa hold about three-quarters.
- Density is people per square kilometre: 51 for the world (book), 382 for India (Census 2011).
- Plains, mild climate, fertile soil, water and minerals draw people; so do services, shrines and jobs.
- Deaths fell while births stayed high — hence the population explosion.
- Natural growth rate = birth rate − death rate; migration adds or subtracts.
- Emigrants leave; immigrants arrive; the trend is towards more developed countries and cities.
- Kenya grows fast (deaths fell, births high); the UK slowly (both low).
- Composition is the structure of a population — age, sex, literacy, health, occupation, income.
- Pyramid: broad base = many births; narrow base = few births; wide top = long lives.
Traps to avoid
- ‘90% on 30% of land’ is this book; Class 12 NCERT says about 10% of land.
- Fig. 5.2 has six Asian countries; Russia spans Europe and Asia.
- 3 billion in 1959 (book) — the UN usually says 1960.
- The explosion came from falling deaths, not rising births.
- Birth and death rates are per 1,000 people, not per cent.
- The three factors of population change are births, deaths and migration.
- Kenya is both a ‘deaths have fallen’ case (p. 48) and a ‘both rates high’ pyramid (p. 51).
- Dependents: below 15 and above 65; demographic dividend comes from the 15–64 group.
- Dense does not mean developed: Bangladesh and Japan.
- The scheme is PMKVY, under the Ministry of Skill Development and Entrepreneurship — not the Labour Ministry.
- Figs 5.6 and 5.9 mislabel 20–24 and 25–29 as ‘30-24’ and ‘35-39’.
How to strategise
Prelims — what UPSC asks
- Density and distribution: the definition of density (1991); why the Nile valley and Java are crowded — intensive agriculture on fertile soils (2001).
- Change and transition: reading a falling birth-death gap as falling growth (1992); the order of transition stages (1993, 2012); countries known for low birth rates and ageing — Italy, Japan, South Korea (2024).
- Human resources: the demographic dividend as a large 15–64 group (2011) realised through skill development (2013); PMKVY's ministry and aims (2018).
- Elsewhere: physiological density (1987), latitudes of population (1997), TFR (2024) and state densities sit on legy102 and legy201, which teach them.
Mains — where it appears and how to answer
- From this chapter: GS1 2025 (distribution and density in the Ganga basin with land, soil and water) — the book's factors and the Ganga plains, then legy201's data; GS1 2024 (why large cities attract migrants) — the book's employment, education and health pulls; GS1 2024 (‘demographic winter’) — Japan's narrow-based pyramid and the UK pattern; GS3 2014 and GS2 2023 (the dividend, skills and employability; human resource development) — the book's people-as-resource line and the PMKVY box, then keec104 and lesy102.
- Elsewhere: demographic transition in India (GS1 2026) and women's empowerment and population (GS1 2019) on legy102, lesy102, legy201; the dividend and skills (GS2 2016) on keec104, lesy102, legy201.
- Keep answers neutral: data with year and source; views on population as asset or burden attributed side by side; schemes as dated facts; no present-day political commentary.
Self-check
Tap an option. NCERT's own exercise questions come first; the rest test the figures and common confusions.
1. According to the book, which pair of continents holds almost three-quarters of the world's people?
2. Population density is normally expressed as:
3. Which of these is NOT among the book's geographical factors of population distribution?
4. The natural growth rate of a country is:
5. According to the book, the world's population reached 3 billion in:
6. A country where death rates have fallen but birth rates remain high will have:
7. A population pyramid that is narrow at the base indicates:
8. India's ‘demographic dividend’ refers mainly to its large population in which age group?
UPSC questions from this chapter
Open any question to attempt it in the Question bank — your attempt is saved to your progress.