Chapter 6 of 10
Revision Notes
Biodiversity — Revision Notes
ICSE · Class 10 · Environmental Science
Biodiversity revision notes for ICSE Class 10 Environmental Science: 4 topics in quick points. Part of the ICSE Class 10 Environmental Science syllabus.
60 questions40 flashcards5 concepts
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Key Topics to Revise
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1. Biodiversity at Risk Due to Human Actions
- Loss of habitat is one of the greatest threats to biodiversity.
- Habitat loss is caused mainly by agricultural activities, mining, human settlements and industry.
- Habitat loss and degradation has affected 89% of all threatened birds, 83% of mammals and 91% of all threatened plants assessed globally.
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2. Reasons for Concern and Conservation of Wildlife
- Wildlife should be conserved for ecological, economic and aesthetic reasons.
- Ecological reasons: wildlife maintains biodiversity and food chains, and helps ecological balance.
- Destroying forests affects herbivores first, then carnivores, and disturbs the food web.
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3. In-situ and Ex-situ Conservation
- In-situ conservation means conservation of species in their natural habitats.
- It includes national parks, wildlife sanctuaries and biosphere reserves.
- India has the second largest base of biodiversity in the world with 441 Wildlife Sanctuaries and 80 National Parks in this context.
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4. Important Protected Areas in India
- Corbett National Park is India's first national park and was set up in 1936.
- Corbett National Park is located in Nainital and Pauri Garhwal in Uttaranchal and includes Sonanadi Wildlife Sanctuary.
- Jim Corbett helped and recommended the setting up of Corbett National Park.
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Full NotesKey Concepts
Biodiversity means the variety of lifeHabitat loss is one ofOverharvesting means excessive huntingExotic species introduced into an areaPollution damages living systems
Frequently Asked Questions
What are the important topics in Biodiversity for ICSE Class 10 Environmental Science?
Key topics in Biodiversity include Biodiversity at Risk Due to Human Actions, Reasons for Concern and Conservation of Wildlife, In-situ and Ex-situ Conservation, Important Protected Areas in India. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How should I revise Biodiversity for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 60 practice questions on Biodiversity. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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