Chapters
Chapter 2 - Sexual Reproduction in Flowering Plants
Chapter 3 - Human Reproduction
Chapter 4 - Reproductive Health
Chapter 5 - Principles of Inheritance and Variation
Chapter 6 - Molecular Basis of Inheritance
Chapter 7 - Evolution
Chapter 8 - Human Health and Disease
Chapter 9 - Strategies for Enhancement in Food Production
Chapter 10 - Microbes in Human Welfare
Chapter 11 - Biotechnology : Principles and Processes
Chapter 12 - Biotechnology and its Applications
Chapter 13 - Organisms and Populations
Chapter 14 - Ecosystem
Chapter 15 - Biodiversity and Conservation
Chapter 16 - Environmental Issues
NCERT Biology Class 12
Chapter 15 - Biodiversity and Conservation
Pages 268 - 269
Name the three important components of biodiversity.
How do ecologists estimate the total number of species present in the world?
Give three hypotheses for explaining why tropics show greatest levels of species richness.
What is the significance of the slope of regression in a species − area relationship?
What are the major causes of species losses in a geographical region?
How is biodiversity important for ecosystem functioning?
What are sacred groves? What is their role in conservation?
Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem?
The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?