Paper-II

Section A
1. Write short notes on any four of the following in about 150 words each:
a. Sex Chromosomes
b. ER
c. Correlation and regression
d. Heterosis
e. Colchicine and EMS
2. Describe the process of Meiosis sequentially with suitable diagrams. Contrast in with Mitosis
3. Answer the following questions
a. What are the molecular mechanisms of mutations? Discuss the consequences of any two of them
b. How do tetraploidy and aneuploidy originate? What are their roles in Plant Breeding
4. Answer the following questions
a. Discuss the role of Biotechnology in Agriculture
b. Ontogenyr repeats Phylogeny. Discuss

Section B
1. Write short notes on any four of the following in about 150 words each:
a. Seed
b. Social Forestry
c. alpha-oxidation
d. TRTPS
e. Haze
2. Answer the following questions
a. Distinguish between growth movements and stomata movements
b. Define and distinguish any four major ecosystems of India
3. Answer the following questions
a. Classify and characterisephy to hormones
b. Enumerate the secondary plant products with emphasis on the roles of pigments
4. Explain Biogeochemical Cycles. Describe the hydrological cycle in detail