Paper-II

Section A
1. Write short notes on any four of the following in about 150 words each:
a. Evolution
b. Gametophytic apomixis
c. Mass selection
d. Hybridisation
e. Correlation and regression
2. Answer the following questions
a. What is micropropagation? Describe the generalised technique of micropropagation
b. Discuss the advantages of micropropagation
3. Answer the following questions
a. Describe the structure and functious of mitochondria
b. How the mitochondrial function is controlled
4. Describe in detail the synthesis of nucleic acids and proteins

Section B
5. Write short notes on any four of the following in about 150 words each:
a. Growth regulators
b. Photoperiodism
c. Controlled storage of seeds
d. Seed germination
e. Social forestry
6. Answer the following questions
a. What do you understand by ecosystem
b. How would you maintain an ecosystem
7. Answer the following questions
a. What is mineral deficiency
b. What are the deficiency symptoms of the following minerals:
1. Nitrogen
2. Zinc
3. Calcium
4. Iron
8. Answer the following questions
a. Discuss the mechanism of nitrogen fixation by the leguminous plants. How the nitrogen fixation is measured
b. List the various Rhizobium species and their host legumes