Biodiversity and Conservation — Chapter Summary
CBSE · Class 11 · Geography
Summary of Biodiversity and Conservation for CBSE Class 11 Geography. Part of the CBSE Class 11 Geography syllabus.
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Overview
Biodiversity means the number and variety of organisms found within a specified geographic region. It includes plants, animals, micro-organisms, the genes they contain, and the ecosystems they form. Biodiversity today is the result of 2.5-3.5 billion years of evolution. It is richest in the tropics
Key Concepts
Biodiversity is the variety of life
Biodiversity is the variety of life in a region. It includes the variation within species, the variety of species, and the diversity of ecosystems.
Genetic diversity refers to variation
Genetic diversity refers to variation of genes within a species. It causes differences among individuals of the same species, such as differences in h
Species diversity is the variety
Species diversity is the variety of species in a defined area. It is measured through richness, abundance, and types of species.
Ecosystem diversity refers to the variety
Ecosystem diversity refers to the variety of ecosystems and habitats, along with the ecological processes within them. Ecosystem boundaries are not ri
Areas rich in species diversity
Areas rich in species diversity are called hotspots. Hotspots are defined according to vegetation because plants determine the primary productivity of
Learning Objectives
- Define biodiversity and explain its meaning at different levels.
- Describe genetic diversity, species diversity, and ecosystem diversity.
- Explain why biodiversity is richer in the tropics.
- Understand the ecological, economic, and scientific importance of biodiversity.
- Identify major causes of biodiversity loss.
Frequently Asked Questions
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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