Papers : IFS - Indian Forest Service Botany Previous Year Paper (II) (2002)

PAPER -II : SECTION A

1. Write short notes on any four of the following in about 150 words each:
(a) Evolution (10)
(b) Gametophytic apomixis (10)
(c) Mass selection (10)
(d) Hybridisation (10)
(e) Correlation and regression (10)

2. (a) What is micropropagation? Describe the generalised technique of micropropagation. (30)
(b) Discuss the advantages of micropropagation. (10)

3. (a) Describe the structure and functious of mitochondria. (30)
(b) How the mitochondrial function is controlled? (10)

4. Describe in detail the synthesis of nucleic acids and proteins. (40)

SECTION B
5. Write short notes on any four of the following in about 150 words each:
(a) Growth regulators (10)
(b) Photoperiodism (10)
(c) Controlled storage of seeds (10)
(d) Seed germination (10)
(e) Social forestry. (10)

6. (a) What do you understand by ecosystem? (30)
(b) How would you maintain an ecosystem? (30)

7. (a) ‘What is mineral deficiency? (10)
(b) What are the deficiency symptoms of the following minerals : (30)
(i) Nitrogen
(ii) Zinc
(iii) Calcium
(iv) Iron.

8. (a) Discuss the mechanism of nitrogen fixation by the leguminous plants. How the nitrogen
fixation is measured? (30)

(b) List the various Rhizobium species and their host legumes. (10)