Paper-II
Section A

Write short notes on any four of the following in about 150 words each:

Lysosomes

Cytoskeleton

Multiple factor inheritance

Prion

Standard deviation

Answer the following questions

With suitable diagrams, explain the structure of chromatin found in interphase nucleus

Explain how the chromatin is packaged in a metaphase chromosome

Explain the significance of the condensation/decondensation cycle of chromatin

Answer the following questions

Enumerate the salient features of genetic code Flow is it related to evolution

Give a detailed account of prokaryotic protein synthesis

Answer the following questions

What is heterosis? Explain the genetic basis of heterosis and inbreeding depression

Write brief notes on different strategies for the improvement of self-pollinated crops

Section B

Write short note on any four of the following in about 150 words each:

Anti-transpirants

Charismatic theory

Senescence

Social forestry

Intellectual Property Rights

Answer the following questions

Trace the path of carbon in C3 plants during photosynthesis

Explain how Hatch and Slack pathway inC4 plants is integrated with Calvin cycle

Explain the mechanism of flower induction crop plants by vernalisation

Answer the following questions

Illustrate the energy flow in an aquatic ecosystem

Give a comparative account on the biomechanical cycling of nitrogen and phosphorus