CBSE Class 12 Biology Biodiversity and Conservation Question Bank

CBSE Class 12 Biology Biodiversity and Conservation Question Bank. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations.  Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects. 

1. Why is India said to have greater ecosystem than Norway?

2. Write the importance of cryopreservation in conservation of biodiversity.

3. The amazon rain forest is referred to as ‘the lungs of the planet’. Mention any one human activity which causes loss of biodiversity in this region.

4. About 20 species of a Cichlid fish became extinct when a particular fish was introduced in Lake Victoria of Africa. Name the invasive fish.

5. What is the expanded for of IUCN?

6. Why is genetic variation important in the plant Rauwolfia vomitoria?

7. What is meant by ‘alien species’ invasion? Name one plant and one animal alien species that are threat to our Indian native species.

8. Why should biodiversity be conserved? List any two ethical arguments in this support.

9. State the use of biodiversity in modern agriculture.

10. Differentiate between in situ and ex situ approaches of conservation of biodiversity?

11. Explain taking one example, the effect of co-extinction on biodiversity?

12. In the biosphere, immense biological diversity exists at all levels of biological organization. Explain any two levels of biodiversity?

13. What does the term genetic diversity refer to? What is the significance of large genetic diversity in a population?

14. The sacred grooves of Aravalli hills and Ooty botanical garden, both aim at biodiversity conservation. How do they differ in their approaches? Explain.

15. Alien species are highly invasive and are a threat to indigenous species. Substantiate this statement with any three examples.

16. List the reasons that account for the greater biological diversity in tropics?

17. Explain giving one example, how co-extinction is one of the causes of loss of biodiversity. List the three other causes also (without description).

18. Explain ‘Rivet popper hypothesis’ name the ecologists who proposed it.

19. What are the two types of desirable approaches to conserve biodiversity? Explain with examples bringing out the difference between the two types.

20. a) Taking one example each of habitat loss and fragmentation, explain how the two are responsible for biodiversity loss.

b) Explain two different ways of biodiversity conservation.

21. Isah Upanishad says ‘let no one species encroach over the rights and privileges of other species.

One can enjoy nature by giving up greed’. But human activities have accelerated the rate of extinction of species in recent times.

(a) Name any four such mass activities.

(b) Describe how each of these activities leads to loss of biodiversity.

( c) What value is taught by the Upanishad?

22. During an excursion to a botanical garden, the teacher shows an old tree which was on the verge of extinction. As soon as the teacher advanced with the students, some enthusiastic students climbed up the tree and started cutting the branches, collecting its leaves as precious collection. Rajesh instead took photographs of the tree from various angles. The boys mocked at Rajesh while the teacher appreciated him.

a) What values did Rajesh possess?

b) Why should we conserve biodiversity?

c) How can be biodiversity be conserved?

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