Question

11. Name the types of acquired immune responses, and the special types of
lymphocytes involved in providing them.
Name two organisms belonging to two different kingdoms, that are
OR
2
2
commonly used as biofertilizers, and how ?
12. Write the basis of naming the restriction endonuclease EcoR-I.
2
3
3
SECTION - C
13. Write two major causes of deforestation. Explain the role of re-forestation
in maintaining ecological balance.
14. How would you differentiate between gross primary productivity from net
primary productivity, and secondary productivity of an ecosystem.
OR
(a) Explain the concept of endemism,
(b) Name four regions in and around our country that are considered
hot-spots.
15. Compare the symptoms of ascariasis, amoebiasis and elephantitis.​

Answer 1

Answer:

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kya likha he samj nhi aya