NCERT Solutions for Class 11 Sociology Chapter 3: Environment and Society (NCERT 2026–27)
These Class 11 Sociology Chapter 3 solutions cover Environment and Society from Understanding Society, the NCERT textbook for the 2026–27 session. The chapter explains that all societies have an ecological basis, how social environments emerge through a two-way interaction between biophysical ecology and human action, and how social organisation — property relations, division of labour, values and knowledge systems — shapes the relationship between environment and society. It also surveys the major environmental problems and risks, and shows why environmental problems are also social problems rooted in inequality, ending with the idea of social ecology and sustainable development. Below you get step-by-step answers to all 10 NCERT exercise questions, clear notes on key terms, extra practice, MCQs, Assertion–Reason and FAQs.
Chapter 3, Environment and Society, argues that every society rests on an ecological basis — the web of physical and biological systems of which humans are one element. Ecology limits and shapes how people can live in a place, but over time human action also modifies ecology, so that ‘natural’ features (floods, aridity, even the Delhi Ridge forest) are often partly human-made. Society and nature relate through a two-way process: nature shapes society and society shapes nature. This interaction is mediated by social organisation — property relations, the division of labour, gender, values and knowledge systems. The chapter then maps the main environmental problems and risks (resource depletion, pollution, global warming, genetically modified organisms, and natural and man-made disasters such as Bhopal), and explains the social ecology view that ecological problems arise from social problems. It closes with sustainable development — meeting present needs without compromising future generations.
Key Concepts & Terms
Ecology: the web of physical and biological systems and processes of which humans are one element — mountains and rivers, plains and oceans, and the flora and fauna they support.
Ecological basis of society: the idea that all societies depend on nature; ecological factors limit and shape how human beings can live in any particular place.
Hydrology: the science of water and its flows, or the broad structure of water resources in a country or region.
Social environment: the environment that emerges from the interaction between biophysical ecology and human interventions (e.g. an agricultural farm or the built environment of a city).
Property relations: the rules that determine how and by whom natural resources can be owned and used — e.g. government, private or community ownership of forests, land and water.
Commodification of nature: turning nature into objects that can be bought and sold for profit, stripping away its ecological, spiritual and aesthetic meanings (a capitalist value).
Risk society: a society that uses complex technologies and products it does not fully understand, exposing itself to large-scale, often invisible hazards (e.g. Chernobyl, Bhopal, Mad Cow disease).
Resource depletion: using up non-renewable natural resources — fossil fuels, groundwater, topsoil and biodiversity — faster than they can be replaced.
Pollution: contamination of air, water and the soundscape by emissions, effluents, indoor cooking smoke and noise, causing illness and death.
Global warming: the rise in global temperatures caused by the ‘greenhouse’ effect of gases like carbon dioxide and methane, leading to climate change.
Genetically modified organisms (GMOs): organisms whose genes are altered using gene-splicing to add new characteristics, raising long-term ecological and social concerns.
Social ecology: the school of thought that holds that nearly all our ecological problems arise from deep-seated social problems, so they cannot be solved without addressing social inequality.
Sustainable development: development that meets the needs of the present without compromising the ability of future generations to meet their own needs (Brundtland Report, 1987).
Glossary terms:Emissions (waste gases from industries or vehicles), Effluents (waste materials in fluid form from industrial processes), Aquifers (underground formations where water is stored), Monoculture (reducing plant life in a region to a single variety) and Deforestation (loss of forest area from cutting trees or taking over land).
NCERT Exercises — Full Solutions
All questions below are reproduced verbatim from the NCERT textbook’s end-of-chapter Exercises section. Answers are original, written in exam-ready style.
1. Describe in your own words what you understand by the term ‘ecology’.
ANSWEREcology refers to the web of physical and biological systems and processes of which human beings are just one element. It includes the non-living, or biophysical, surroundings — mountains and rivers, plains and oceans, the climate, soils and water — as well as the flora (plant life) and fauna (animal life) that these surroundings support.The ecology of a place is shaped by the interaction between its geography and its hydrology. For example, the plant and animal life of a desert is adapted to scarce rainfall, rocky or sandy soils and extreme temperatures. In this way ecological factors limit and shape how human beings can live in any particular place.In short, ecology is the total environmental setting — living and non-living — within which all life, including human society, exists and to which it must adapt.
2. Why is ecology not limited only to the forces of nature?
ANSWEREcology is not limited only to the forces of nature because, over time, ecology has been modified by human action. What appears to be a purely natural feature of the environment is often partly produced by human intervention.For example, the aridity or flood-proneness of a region may be the result of human activity — deforestation in the upper catchment of a river can make the river more flood-prone, and global warming caused by human action is changing climates everywhere. The Delhi Ridge forest looks natural but was planted by the British, and the grassy meadows of Corbett were once agricultural fields.Many ecological elements around us are obviously human-made — an agricultural farm with its conservation works, cultivated crops, fertilisers and pesticides, or the built environment of a city made of concrete and glass. Because the natural and human factors in ecological change become so intertwined, ecology cannot be understood as the result of natural forces alone.
3. Describe the two-way process by which ‘social environments’ emerge.
ANSWERSocial environments emerge from the interaction between biophysical ecology and human interventions, and this is a two-way process: just as nature shapes society, society shapes nature.Nature shaping society: ecological conditions shape the forms of human life and culture. For instance, the fertile soil of the Indo-Gangetic floodplain enables intensive agriculture; its high productivity supports dense populations and surpluses that give rise to complex hierarchical societies and states. In contrast, the desert of Rajasthan can support only pastoralists who move from place to place in search of fodder for their livestock.Society shaping nature: human social organisation transforms nature. The social organisation of capitalism, for example, has shaped nature across the world — the private automobile has transformed lives and landscapes, producing air pollution, congestion, conflicts over oil and global warming. Human interventions increasingly have the power to alter environments, often permanently.It is through this constant give-and-take between biophysical ecology and human action that the social environments we live in — farms, cities and managed landscapes — come into being.
4. Why and how does social organisation shape the relationship between the environment and society?
ANSWERThe interaction between environment and society is shaped by social organisation because the way a society is organised decides who can use natural resources, on what terms, and with what values.Property relations: ownership determines how and by whom natural resources can be used. If forests are owned by the government, it decides whether to lease them to timber companies or let villagers collect produce; private ownership of land and water affects whether others can have access at all.Division of labour: control over resources is linked to the division of labour in production. Landless labourers and women have a different relationship with natural resources than landowning men. In rural India, women often experience resource scarcity more acutely because gathering fuel and fetching water are women’s tasks, yet they do not control these resources.Values, norms and knowledge systems: different relationships also reflect different values. Capitalist values support the commodification of nature; socialist values of equality have led to land redistribution; religious values lead some groups to conserve sacred groves and species. Colonialism, too, generated knowledge (geology, botany, forestry) to extract resources for imperial powers.Thus social organisation, through property, labour, gender and values, decides how different social groups relate to and use their environment.
5. Why is environmental management a complex and huge task for society?
ANSWEREnvironmental management is a complex and huge task because we do not know enough about biophysical processes to predict and control them reliably. Nature works through intricate cycles and interactions that are still poorly understood.At the same time, human relations with the environment have become increasingly complex. With the spread of industrialisation, resource extraction has expanded and accelerated, affecting ecosystems in unprecedented ways. Complex industrial technologies and forms of organisation require sophisticated management systems which are often fragile and vulnerable to error.We live in ‘risk societies’, using technologies and products that we do not fully grasp. Disasters such as the Chernobyl nuclear accident, the Bhopal gas tragedy and Mad Cow disease in Europe show how dangerous industrial environments can be when management fails. Because both natural processes and human interventions are so complex and uncertain, managing the environment safely is an enormous and difficult challenge.
6. What are some of the important forms of pollution-related environmental hazards?
ANSWERThe important pollution-related environmental hazards described in the chapter are:Air pollution: a major problem in both urban and rural areas, caused by emissions from industries and vehicles and by the burning of wood and coal for domestic use. The WHO reported that in 2012 about 7 million people died from air pollution exposure, making it the world’s largest single environmental health risk. Indoor pollution from cooking fires (chulhas) especially endangers village women.Water pollution: a very serious issue affecting both surface water and groundwater. Major sources are domestic sewage, factory effluents and run-off from farms carrying synthetic fertilisers and pesticides; the pollution of rivers and water bodies is particularly important.Noise pollution: a hazard especially in cities, caused by amplified loudspeakers at religious, cultural and political events, vehicle horns and traffic, and construction work — serious enough to be the subject of court orders in many cities.
7. What are the major environmental issues associated with resource depletion?
ANSWERResource depletion means using up non-renewable natural resources, and it is one of the most serious environmental problems. The major issues associated with it are:Depletion of fossil fuels: petroleum and other fossil fuels are being consumed rapidly and cannot be replaced once exhausted.Decline of water resources: groundwater levels are falling sharply, especially in Punjab, Haryana and Uttar Pradesh, as aquifers built over thousands of years are emptied in a few decades. Rivers have been dammed and diverted, and urban water bodies filled up, damaging natural drainage.Loss of topsoil: fertile topsoil created over thousands of years is being destroyed through erosion, water-logging, salinisation and brick-making.Loss of biodiversity: habitats such as forests, grasslands and wetlands are shrinking, largely due to the expansion of agriculture. This endangers many species, several unique to India — as seen in the sharp fall in the tiger population despite strict laws and sanctuaries.
8. Explain why environmental problems are simultaneously social problems.
ANSWEREnvironmental problems are simultaneously social problems because how environmental change affects different groups is a function of social inequality. Social status and power decide the extent to which people can insulate themselves from environmental crises or overcome them.For example, in Kutch, Gujarat, richer farmers invest in deep bore tubewells to tap groundwater for cash crops, while the earthen wells of poorer villagers run dry when the rains fail — leaving them without even drinking water. Their ‘solutions’ can actually worsen the disparities. Similarly, urban poor migrants forced to settle on public land are evicted to make way for malls, hotels and infrastructure for affluent residents.Even concerns that seem universal — like reducing air pollution or protecting biodiversity — may, when pursued, serve powerful groups and hurt the poor (as the debates over large dams and protected areas show). Because different social groups stand in different relationships to the environment, environmental crises have their roots in social inequality, and solving them requires changing relations between social groups.
9. What is meant by social ecology?
ANSWERSocial ecology is a school of thought which points out that social relations — in particular the organisation of property and production — shape environmental perceptions and practices. Different social groups stand in different relationships to the environment and approach it differently.For example, a Forest Department geared to maximising revenue by supplying large volumes of bamboo to the paper industry will view and use a forest very differently from an artisan who harvests bamboo to make baskets. Their varied interests and ideologies generate environmental conflicts.What defines social ecology as ‘social’, as the philosopher Murray Bookchin argued, is its recognition that nearly all our present ecological problems arise from deep-seated social problems — economic, ethnic, cultural and gender conflicts. Conversely, ecological problems cannot be understood or resolved without dealing with the problems within society. So addressing environmental problems requires changing environment–society relations by changing relations between social groups.
10. Describe some environment related conflicts that you know of or have read about. (Other than the examples in the text.)
ANSWERThis question asks for examples in your own words; answers will vary. A model answer can mention well-known Indian environment-related conflicts:Chipko Movement (1970s, Uttarakhand): villagers, especially women, hugged trees to stop contractors from felling them, asserting local communities’ rights over forests against commercial logging.Narmada Bachao Andolan: a long struggle against the Sardar Sarovar and other large dams on the Narmada, which would submerge villages and forests and displace thousands of tribals and farmers — a classic conflict between ‘development’ and the rights of the displaced.Silent Valley Movement (Kerala): a successful campaign in the 1970s–80s to stop a hydroelectric dam that would have destroyed a rich tropical rainforest.Other conflicts: the Jungle Bachao Andolan in Bihar/Jharkhand, anti-mining and anti-POSCO struggles in Odisha, and inter-state river-water disputes such as the Cauvery dispute. In each case, different social groups with different interests in the same resource come into conflict, confirming that environmental problems are rooted in social relations.
Extra Practice Questions
Short Answer Type Questions
Q1. What is meant by the ‘ecological basis’ of society?
ANSWERThe ecological basis of society means that all societies depend on nature and exist within an ecological setting. Ecological factors — climate, soil, water, flora and fauna — limit and shape how human beings can live, work and organise themselves in any particular place.
Q2. Define ‘risk society’ with an example.
ANSWERA risk society is one that uses complex technologies and products it does not fully understand, exposing itself to large-scale hazards. Examples include nuclear disasters like Chernobyl, industrial accidents like Bhopal and Mad Cow disease in Europe, all showing the dangers built into modern industrial environments.
Q3. What is the commodification of nature?
ANSWERThe commodification of nature is the capitalist process of turning nature into objects that can be bought and sold for profit. For instance, a river’s many meanings — ecological, utilitarian, spiritual and aesthetic — are reduced to a single calculation of profit and loss from selling its water.
Q4. Briefly describe the Bhopal disaster.
ANSWEROn the night of 3 December 1984, methyl isocyanate (MIC) gas leaked from a Union Carbide pesticide factory in Bhopal, killing about 4,000 people and permanently disabling around 200,000. The plant was under-designed, poorly maintained and lacking safety features, and repeated warnings had been ignored — a stark example of a man-made environmental disaster.
Q5. Why are women in rural India more affected by resource scarcity?
ANSWERIn rural India, gathering fuel and fetching water are usually women’s tasks, yet women generally do not own or control these resources. So when forests recede or water sources dry up, women experience the scarcity most acutely while having least power to manage or secure these resources.
Long Answer Type Questions
Q1. Discuss the major environmental problems and risks faced by societies today.
ANSWERThe chapter identifies five globally recognised environmental problems. (A) Resource depletion — the using up of non-renewable resources like fossil fuels, the rapid fall in groundwater levels in states such as Punjab, the destruction of topsoil through erosion and salinisation, and the loss of biodiversity as forests, grasslands and wetlands shrink. (B) Pollution — air pollution (the world’s largest single environmental health risk, including deadly indoor cooking smoke), water pollution from sewage, effluents and farm run-off, and noise pollution in cities. (C) Global warming — greenhouse gases trapping the sun’s heat, raising temperatures, melting polar ice, raising sea levels and destabilising climates. (D) Genetically modified organisms — gene-splicing that introduces new traits but carries unknown long-term effects and lets companies create sterile seeds that trap farmers in dependence. (E) Natural and man-made disasters — events such as the 1984 Bhopal gas leak and the 2004 tsunami. Together these show how human activity increasingly alters environments, often permanently, creating serious risks for present and future generations.
Q2. Examine how social organisation, values and knowledge systems shape the environment–society relationship.
ANSWERSocial organisation mediates almost every link between society and the environment. Property relations decide who owns and may use resources: government, private or community ownership of forests, land and water determines who has access and on what terms. The division of labour means landless labourers and women relate to resources differently from landowning men; in rural India women bear the burden of scarcity without controlling resources. Beyond ownership, values and norms matter: capitalist values support the commodification of nature, socialist values of equality have driven land redistribution to landless peasants, and religious values lead some groups to protect sacred groves and species while others believe they have divine sanction to exploit nature. Finally, knowledge systems shape practice — colonialism systematically built up sciences like geology, botany, forestry and hydraulic engineering precisely to extract resources for imperial powers, and changed social relations give rise to new knowledge and new ways of managing the environment. Hence the environment–society relationship is never purely ‘natural’; it is organised socially.
Q3. Explain the concept of sustainable development and why it is important.
ANSWERSustainable development, as defined by the Brundtland Report (1987), is ‘development that meets the needs of the present without compromising the ability of future generations to meet their own needs’. It contains two key ideas: the concept of needs, especially the essential needs of the world’s poor, to which overriding priority should be given; and the idea of limitations imposed by technology and social organisation on the environment’s ability to meet present and future needs. It is important because for the last three centuries economic development has emphasised controlling and ruthlessly exploiting nature, leading to the extinction of countless species and severe ecological damage; if depletion continues at the present pace, future generations will pay the price. Today consumption-driven capitalism deepens inequality, so true sustainability requires an equitable, inclusive society where resources are shared fairly. This is reflected in the 17 Sustainable Development Goals adopted by the UN’s member states, and captured in Ban Ki Moon’s remark that ‘there can be no Plan B, because there is no Planet B’.
MCQs & Assertion–Reason
1. The term ‘ecology’ denotes:
(a) only the forces of nature (b) the web of physical and biological systems of which humans are one element (c) only human-made environments (d) the study of human society alone
2. The Delhi Ridge forest is used in the chapter as an example of:
(a) pristine natural vegetation (b) a desert ecosystem (c) something ‘natural’ that is actually human-made (d) a sacred grove
3. Social environments emerge from:
(a) nature alone (b) human action alone (c) a two-way interaction between biophysical ecology and human interventions (d) government policy alone
4. Which factor most directly determines how and by whom natural resources can be used?
(a) climate (b) property relations (c) rainfall (d) soil type
5. The 1984 Bhopal gas tragedy was caused by the leak of:
For each Assertion–Reason question, choose: (A) Both true and the Reason correctly explains the Assertion; (B) Both true but the Reason is not the correct explanation; (C) Assertion true, Reason false; (D) Assertion false, Reason true.
A-R 1. Assertion: What appears to be a natural feature of the environment is often produced by human intervention.
Reason: Deforestation in a river’s upper catchment can make the river more flood-prone.
A-R 2. Assertion: Nature shapes society but society does not shape nature.
Reason: The social organisation of capitalism, through commodities like the private automobile, has transformed nature across the world.
A-R 3. Assertion: Environmental problems are simultaneously social problems.
Reason: How environmental crises affect different groups is a function of social inequality, status and power.
A-R 4. Assertion: Environmental management is an easy and straightforward task.
Reason: Not enough is known about biophysical processes, and complex industrial systems are fragile and vulnerable to error.
A-R 5. Assertion: Social ecology holds that ecological problems arise from social problems.
Reason: Different social groups, because of their property and production relations, stand in different relationships to the environment.
Answer key: 1-(A), 2-(D), 3-(A), 4-(D), 5-(A).
Exam Tips & Common Mistakes
How to score full marks in this chapter
Define ecology precisely (the web of physical and biological systems of which humans are one element) and always stress the two-way process — nature shapes society and society shapes nature — with one example each (Indo-Gangetic plain vs the automobile). For social-organisation questions, structure your answer under property relations, division of labour, values/norms and knowledge systems. Memorise the five environmental problems (resource depletion, pollution, global warming, GMOs, disasters) and the textbook’s named examples — Bhopal, Chernobyl, Kutch, the Delhi Ridge, the tiger crisis, the Brundtland definition and the 17 SDGs — to show close study of the chapter.
Common mistakes to avoid
Treating ecology as “only nature” — remember it is increasingly modified by human action.
Describing the society–nature link as one-way; always present it as a two-way process.
Confusing ecosystem functions/processes with the social organisation that decides resource use.
Forgetting that environmental problems are rooted in social inequality (the social-ecology point).
Mixing up emissions (waste gases) with effluents (waste fluids) in pollution answers.
Leaving the ‘own examples’ question (Q10) blank — cite movements like Chipko or Narmada Bachao Andolan.
Frequently Asked Questions
What is Chapter 3 of Class 11 Sociology (Understanding Society) about?
Chapter 3, Environment and Society, explains that all societies have an ecological basis, how social environments emerge through a two-way interaction between nature and human action, how social organisation shapes resource use, the major environmental problems and risks, and why environmental problems are also social problems — ending with social ecology and sustainable development.
What does ‘social ecology’ mean in Class 11 Sociology?
Social ecology is the view, associated with Murray Bookchin, that nearly all our ecological problems arise from deep-seated social problems such as economic, ethnic, cultural and gender conflicts. It holds that ecological problems cannot be resolved without addressing inequality and the social organisation of property and production.
How many questions are there in the Class 11 Sociology Chapter 3 exercise?
The end-of-chapter Exercises section of Understanding Society Chapter 3 contains 10 numbered questions, all reproduced verbatim and answered step by step on this page.
