BIO XII 5.3
Chapter: BIODIVERSITY AND CONSERVATION
BIO XII 5.3.1
Q.1. Define biodiversity and enlist all the three levels of biodiversity.
Q.2. Which scientist popularised the term biodiversity,
Q.3. What is the total number of plant and animal species described so far on earth?
Q.4. As per estimates of Robert May what is the number of global species diversity?
Q.5. Describe briefly the relationship between species richness and area explored.
BIO XII 5.3.2
Q.6. What is the effect of species diversity on the functioning of ecosystem? Write min. two points.
Q.7. What is rivet popper hypothesis? Who proposed this?
Q.8. Enlist a few recently extinct species in the world.
Q. 9. Enlist the four major causes of biodiversity loss which are known as "The Evil Quartet."
Q.10. What is IUCN Red List? Write any two uses of this list.
Q.11. Expand: IUCN MAB
BIO XII 5.3.3
Q.12. Enlist five reasons each under narrowly utilitarian argument and broadly utilitarian arguments for biodiversity conservation.
Q.13. Name the species whose introduction for aquaculture has created threat to indigenous cat fish in rivers.
Q.14. Name three plants which have become a major environmental problem as alien species invaders.
Q.15. Enlist the various in-situ and ex-situ methods of biodiversity conservation.
Q.16. When given a choice between in-situ and ex-situ methods of biodiversity conservation which would be preferred by you and why?
BIO XII 5.3.4
Q.17. What are biodiversity hotspots? Give any two examples of hotspots.
Q.18. What is the total number of biosphere reserves, national parks and wild life sanctuaries in India?
Q.19. What are sacred grooves? Give a few examples. What is their importance?
Q.20. "Cryopreservation is an in-vitro and ex-situ method of conservation." Explain.
Q.21. When and where was Earth Summit held?
Q.22. Differentiate between a wildlife sanctuary and national park.
Q.23. Give three hypotheses to explain why tropics show greater levels of species richness.
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