Q1.What is meant by biodiversity? Why is India considered a mega-diversity nation?

Biodiversity refers to the variety of plant and animal species present in a particular region. India is considered a mega-diversity nation because it has a huge variety of flora and fauna found in different climatic regions, from the Himalayas to coastal areas and deserts.

Q2.Differentiate between flora and fauna with suitable examples.

Flora refers to the plant life of a particular region, for example, teak and sal trees in Indian forests. Fauna refers to the animal life of a region, for example, tigers, elephants and rhinoceros found in India’s forests and grasslands.

Q3.What is meant by natural vegetation? Name any two factors that affect it.

Natural vegetation is the plant cover that grows naturally without human interference in a particular area. It is mainly affected by factors like climate (temperature and rainfall) and relief (slope and altitude of land).

Q4.State any three reasons why forests are called a “renewable resource”.

Forests are renewable because trees can regenerate naturally, they can be replanted through afforestation, and if used carefully, their products like timber, fruits and fodder can be obtained again and again without exhausting the resource permanently.

Q5.How do forests help in maintaining ecological balance?

Forests maintain ecological balance by producing oxygen and absorbing carbon dioxide, preventing soil erosion, maintaining the water cycle, influencing climate and providing habitat for numerous animal and plant species, thus supporting food chains and food webs.

Q6.Explain any two economic benefits of forests.

Forests provide timber, fuelwood, bamboo, medicinal plants and other forest products which support many industries like paper, furniture and pharmaceuticals. They also promote eco-tourism, which generates income and employment for local communities.

Q7.Describe the main characteristics of tropical evergreen forests in India.

Tropical evergreen forests are found in areas of high temperature and heavy rainfall throughout the year. The trees are tall, dense and remain green because they do not shed all their leaves at one time. These forests have a multi-layered structure and support rich biodiversity.

Q8.Which regions of India have tropical evergreen forests? Name any two species found there.

Tropical evergreen forests are found in parts of the Western Ghats, North-Eastern states and the Andaman and Nicobar Islands. Important tree species include ebony, mahogany, rubber and cinchona.

Q9.What are tropical deciduous forests? How are they divided?

Tropical deciduous forests, also called monsoon forests, shed their leaves in the dry season to conserve water. They are divided into moist deciduous forests, found in high rainfall areas, and dry deciduous forests, found where rainfall is comparatively lower.

Q10.Mention any three features of moist deciduous forests.

Moist deciduous forests: (i) occur in areas receiving 100–200 cm of rainfall, (ii) trees shed their leaves for a short period in the dry season, and (iii) important species include teak, sal, shisham, mahua and bamboo, which are valuable for timber and fodder.

Q11.In which parts of India are dry deciduous forests found? What type of climate do they occur in?

Dry deciduous forests are found in the rainier parts of the Deccan plateau and plains of Bihar and Uttar Pradesh. They occur in regions with rainfall between about 70–100 cm and have a longer dry season than moist deciduous forests, causing trees to shed leaves for a longer period.

Q12.Describe the main characteristics of thorn forests and scrubs.

Thorn forests and scrubs occur in regions of low rainfall (less than 70 cm) such as Rajasthan and Gujarat. Vegetation consists of thorny bushes, acacia, babool and cacti. Plants have long roots and small, thick leaves or spines to reduce water loss and survive in dry conditions.

Q13.What are montane forests? How does vegetation change with altitude in these forests?

Montane forests are forests found in mountainous regions. As altitude increases, temperature decreases and vegetation changes: lower slopes have tropical and sub-tropical forests, higher slopes have temperate forests with conifers like pine and deodar, and at very high altitudes alpine grasslands and shrubs appear, followed by mosses and lichens.

Q14.What are mangrove forests? Give one example of a famous mangrove region in India.

Mangrove forests grow in coastal areas influenced by tides, especially in river deltas with saline and waterlogged soil. Their trees have special breathing roots (pneumatophores). The Sunderbans in West Bengal, formed by the Ganga-Brahmaputra delta, is a famous mangrove region in India.

Q15.Why do tropical evergreen forests have multi-layered vegetation and rich wildlife?

Warm and wet conditions throughout the year allow continuous growth of plants, leading to trees of different heights and dense undergrowth. This creates many layers of vegetation, each providing specific habitats and food, resulting in rich wildlife and high biodiversity in tropical evergreen forests.

Q16.How does physical geography influence the distribution of forests and wildlife in India?

Physical features like mountains, plains, plateaus and coasts create different climates and soil types. For instance, the Himalayas support montane forests, the Western Ghats support evergreen forests, while dry plateaus and deserts support thorn forests and grasslands. Each region supports wildlife adapted to those conditions.

Q17.What are “normal species”? Give one example.

Normal species are those whose population level is considered normal for their survival and are not under immediate threat. Examples include cattle, rodents and some common types of plants found widely in India’s forests and fields.

Q18.Define endangered species with one Indian example.

Endangered species are those whose population has declined to a very low level and may soon become extinct if protective measures are not taken. In India, the tiger and the one-horned rhinoceros are well-known examples of endangered species.

Q19.What are vulnerable species? How are they different from endangered species?

Vulnerable species are those whose population is decreasing and may become endangered if the decline continues. Endangered species are already at a very high risk of extinction. Thus, vulnerable species are one step away from becoming endangered if no conservation measures are taken.

Q20.Explain the term “endemic species” with one example.

Endemic species are species that are found only in a particular region and nowhere else in the world. For example, the Andaman wild pig and the Nicobar pigeon are endemic to the Andaman and Nicobar Islands of India, meaning they are uniquely found there.

Q21.What are rare species? Why are they vulnerable to becoming endangered?

Rare species are those with very small population sizes and limited distribution. Because their numbers are already low, any disturbance in their habitat, hunting or natural disaster can push them quickly towards the endangered category or even extinction if not protected.

Q22.How do national parks and wildlife sanctuaries help in the distribution and protection of wildlife?

National parks and wildlife sanctuaries provide safe habitats where animals are protected from hunting and habitat destruction. Human activities are restricted or regulated, allowing wildlife populations to stabilize and grow. Such protected areas also preserve the natural ecosystems on which these species depend.

Q23.Explain how colonial policies led to deforestation in India.

During the colonial period, the British cleared vast forest areas to expand railways, shipbuilding and commercial agriculture. They declared forests as government property, prioritised timber extraction and ignored traditional community rights, leading to large-scale deforestation and loss of biodiversity.

Q24.Mention any three human activities that have resulted in the depletion of forest cover in India.

Major human activities include: (i) expansion of agriculture and shifting cultivation, (ii) construction of large dams, roads and industrial projects, and (iii) overgrazing by livestock and illegal felling of trees for timber and fuelwood.

Q25.How does shifting cultivation affect forest resources?

In shifting cultivation, patches of forests are cleared and burnt to grow crops. After a few years, the land is abandoned and new forest areas are cleared. If the fallow period is short, forests cannot regenerate properly, leading to permanent degradation of forest resources and soil fertility loss.

Q26.Explain any three impacts of mining on forests and wildlife.

Mining leads to: (i) clearing of forests and removal of topsoil, (ii) pollution of water bodies and soil due to waste and chemicals, and (iii) disturbance or displacement of wildlife from their natural habitats due to noise, dust and human activity in mining areas.

Q27.What is poaching? Why is it considered a serious threat to wildlife?

Poaching is the illegal hunting, capturing or killing of wild animals. It targets animals for valuable body parts like skin, horns or bones and often focuses on rare species. This unregulated killing causes rapid decline in wildlife populations and can push many species towards extinction.

Q28.How do large dams and development projects lead to loss of biodiversity?

Large dams and development projects submerge forests, grasslands and river valleys, destroying habitats of many species. They also displace local communities who traditionally protected forests, leading to further exploitation. Fragmentation of habitats makes it difficult for animals to migrate and reproduce, reducing biodiversity over time.

Q29.Explain the relationship between population growth and pressure on forest resources.

Rising population increases demand for land, food, housing, fuelwood and other resources. To meet these demands, forests are cleared for agriculture, settlements and industries. More people also means more use of forest products, leading to overexploitation and degradation of forest resources.

Q30.How does climate change pose a threat to forests and wildlife?

Climate change alters temperature and rainfall patterns, causing shifts in vegetation zones, drying of forests or increased flooding. Some species cannot adapt or migrate quickly, leading to decline or extinction. Increased frequency of extreme events like forest fires and storms also damages forests and wildlife habitats.

Q31.What is meant by conservation of forest and wildlife? Why is it important?

Conservation of forest and wildlife means protecting, preserving and managing these resources so that they are used wisely and remain available for future generations. It is important to maintain ecological balance, safeguard biodiversity, support livelihoods and prevent the extinction of valuable species and ecosystems.

Q32.How does the Indian Constitution support environmental protection?

The Indian Constitution includes provisions directing the state to protect and improve the environment and safeguards forests and wildlife. It also considers it a duty of every citizen to protect the natural environment, including forests, lakes, rivers and wildlife, thus promoting conservation efforts at all levels.

Q33.Describe the main objectives of the Wildlife Protection Act in India.

The Wildlife Protection Act aims to protect wild animals, birds and plants by prohibiting hunting of endangered species, regulating trade in wildlife products and establishing protected areas like national parks and sanctuaries. Its objective is to conserve wildlife and ensure their survival in natural habitats.

Q34.Differentiate between a national park and a wildlife sanctuary.

A national park is a strictly protected area where both wildlife and their habitat are preserved and no commercial activities or grazing are allowed. A wildlife sanctuary also protects animals, but some limited human activities like grazing or firewood collection may be permitted under regulation.

Q35.What is a biosphere reserve? State any two of its functions.

A biosphere reserve is a large protected area designed to conserve biodiversity, ecosystems and traditional lifestyles. Its functions include: (i) conserving genetic diversity of plants and animals, and (ii) promoting research, education and sustainable use of natural resources by local communities living in and around it.

Q36.What is Project Tiger? Why was it launched?

Project Tiger is a wildlife conservation programme launched by the Government of India to protect tigers and their habitats. It was started because tiger populations were rapidly declining due to poaching and habitat loss. The project created tiger reserves to provide safe, well-managed areas for tigers to survive and multiply.

Q37.Explain the terms “afforestation” and “reforestation”. How do they help forests?

Afforestation is planting trees on land where there were no forests earlier, while reforestation is planting trees in deforested or degraded areas. Both increase forest cover, restore habitats, improve soil and water conservation and help in absorbing carbon dioxide from the atmosphere, thus aiding conservation efforts.

Q38.What is social forestry? How does it support local communities?

Social forestry means growing trees on community land, roadside, canal banks and private farms to meet local needs of fuel, fodder and small timber. It supports local communities by providing them with daily necessities, reducing pressure on natural forests and involving people directly in tree planting and protection activities.

Q39.Why is community participation considered essential for forest conservation?

Community participation is essential because local people depend directly on forests and understand them well. When they are involved in decision-making and receive benefits from forests, they actively protect them from illegal felling, fires and overuse. This leads to sustainable and long-term conservation of forest resources.

Q40.What is Joint Forest Management (JFM)? State any two features of this programme.

Joint Forest Management (JFM) is a programme in which local communities and the forest department jointly manage forests. Its features include: (i) villagers form forest protection committees to guard forests, and (ii) in return, they receive a share in forest produce and benefits from timber or non-timber products, encouraging cooperation.

Q41.How did the Chipko Movement contribute to forest conservation in India?

The Chipko Movement began in the Himalayan region when villagers, especially women, hugged trees to prevent them from being cut. This non-violent protest drew national attention to the indiscriminate felling of forests, led to cancellation of many logging contracts and inspired other movements for community-based forest conservation across India.

Q42.Give any three ways in which local communities manage forests sustainably.

Local communities manage forests sustainably by: (i) regulating grazing and collection of fuelwood, (ii) protecting forests from fires and illegal felling, and (iii) following traditional practices like leaving some trees untouched, rotating use of forest patches and conducting community plantations.

Q43.How do women play a significant role in forest and wildlife conservation?

Women are often primary collectors of fuelwood, fodder and water, so they have a direct interest in healthy forests. In many movements, like Chipko, women led protests to save trees. They participate in self-help groups, protect local forests, promote kitchen gardens and support conservation education within their families and communities.

Q44.What lessons do we learn from community-based conservation efforts for sustainable development?

Community-based efforts show that when people are given rights, responsibilities and benefits, they protect resources more effectively. Such efforts combine ecological care with social justice and livelihood security, teaching that sustainable development is possible only when local communities are at the centre of conservation planning and implementation.

Q45.“Conservation of biodiversity is necessary not just for nature but also for people.” Justify this statement with three points.

Conservation of biodiversity is essential for people because: (i) it provides resources like food, medicine, fuel and raw materials, (ii) healthy ecosystems offer services such as clean air, water, fertile soil and climate regulation, and (iii) biodiversity supports livelihoods of millions, especially forest-dependent communities and those engaged in agriculture and tourism.

Q46.How can students contribute to the conservation of forest and wildlife resources in their daily life?

Students can contribute by reducing paper usage and recycling, participating in tree plantation drives, spreading awareness about conservation, supporting eco-friendly products, avoiding plastic and respecting wildlife by not disturbing animals or buying items made from animal parts. These small actions collectively help protect forests and wildlife.

Q47.Suggest any three measures that the government can take to reduce pressure on forest resources.

The government can: (i) promote alternative sources of energy like LPG, biogas and solar power to reduce fuelwood use, (ii) encourage farm forestry and social forestry to meet local timber and fodder needs, and (iii) strictly implement forest laws to stop illegal logging, encroachment and poaching in forest areas.

Q48.Explain how sustainable use of forest resources can be balanced with development needs.

Sustainable use means taking only that amount of forest resources which can regenerate naturally. Development projects should avoid ecologically fragile areas, use environmental impact assessments, provide compensatory afforestation and involve local people in planning. This balance allows economic progress without permanently damaging forests and wildlife habitats.

Q49.How does the Protected Area Network (national parks, sanctuaries, biosphere reserves) support biodiversity conservation?

The Protected Area Network sets aside large regions where ecosystems are preserved in a near-natural state. Human activities like hunting, logging and mining are banned or strictly controlled. By maintaining habitats, allowing species to breed safely and protecting genetic diversity, these areas act as strongholds for biodiversity conservation in the country.

Q50.Why are these NCERT-based short answer questions important for CBSE Class 10 Board Exams?

These questions are framed strictly from the NCERT textbook and follow the CBSE pattern of 2–3 mark questions. They cover all key topics, terms and reasoning-based points from the chapter, helping students strengthen concepts, improve writing practice and score better in short answer and competency-based questions in the Board Exams.