Chapter 26 of 33
Revision Notes
Biodiversity — Revision Notes
ICSE · Class 11 · Geography
Biodiversity revision notes for ICSE Class 11 Geography: 3 topics in quick points. Part of the ICSE Class 11 Geography syllabus.
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.
Get complete notes with diagrams and examples
Full NotesKey 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?
Key topics in Biodiversity include Meaning and Definitions of Biodiversity, Types of Biodiversity, Reasons for Valuing and Conserving Biodiversity. Study these first, then practise questions on each for Class 11 exams.
How should I revise Biodiversity for Class 11 exams?
Learn the core ideas first, then work through the 64 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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