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Biodiversity

ICSE · Class 11 · Geography

Quick revision notes for Biodiversity — ICSE Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.

64 questions30 flashcards5 concepts

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Key Topics to Revise

1

Meaning and Definitions of Biodiversity

  • Biodiversity is the variety of life in the biosphere.
  • It includes plants, animals, micro-organisms, and humans.
  • The term biodiversity was first used by Lovejoy in 1980.
2

Types of Biodiversity

  • The three main types of biodiversity are genetic biodiversity, species biodiversity, and ecosystem diversity.
  • Genetic biodiversity refers to the genetic make-up of a species.
  • Genetic diversity within a species is expressed by sub-species, races, varieties, and forms.
3

Reasons for Valuing and Conserving Biodiversity

  • Biodiversity must be conserved because ecology and biodiversity are being degraded.
  • There are four reasons for valuing and conserving biodiversity: ethical, moral, economic, and aesthetic.
  • Ethical considerations are based on the idea that humans are bound to protect all forms of life.

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Full Notes

Key Concepts

Biodiversity refers to the varietyDifferent definitions describe biodiversity asGenetic biodiversity refers to the geneticSpecies biodiversity means the full rangeEcosystem diversity refers to the variety

Frequently Asked Questions

What are the important topics in Biodiversity for ICSE Class 11 Geography?
Biodiversity covers several key topics that are frequently asked in ICSE Class 11 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 11 Geography?
Understand the core concepts first, then work through the 64 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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