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Biodiversity

ICSE · Class 10 · Environmental Science

Quick revision notes for Biodiversity — ICSE Class 10 Environmental Science. Key concepts, formulas, and definitions for last-minute revision.

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 Notes

Key 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?
Biodiversity covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Biodiversity — ICSE Class 10 Environmental Science?
Understand the core concepts first, then work through the 60 practice questions available for this chapter. Revise formulas and 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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