N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Botany, Part-II
PAPER-IX
(Plant physiology and Biochemistry)
Annual Examination, 2016
Time: 3 Hours. Full Marks: 80
Answer Five Questions in all, selecting at least Two Questions from each group.
All questions carry equal marks.
GROUP
1. Distinguish between
Long day plant and short day plant.
Photoperiodism and Phototropism.
2. What is selective transportation of molecules and ions? Discuss its mechanism.
3. What are Phytonormones? Describe the mode of action of Gibberellin.
4. What is Photophosphorylation? Describe cyclic and Non-cyclic photophophorylation.
5. Describe briefly the role of growth hormones in the germination of seeds.
Or
Write short notes on any two of the following:
Method of Breaking dormancy of seed Chemosynthesis
Cytokinin and senescence of seed Florigen
GROUP
6. Explain Enzyme kinetic and multi-substrate reaction.
7. Describe different types of vitamins. How are they synthesized to perform biological needs.
8. What is Electron transport chain? How ATP is synthesized.
9. Write short notes on any two of the following:
Entropy Nitrification Transamination
Leghaemoglobin and its role in N2 fixation Kreb's cycle (only cycle)
10. What are secondary metabolites? What are commercial value of secondary metabolites.