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, 2018
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. What are Phytohormones Describe the mode of action and role of Gibberellins.
2. Describe the mechanism of opening and closing of Stomata.
3. Give a systematic account of light reaction of Photosynthesis.
4. Write short notes on any two of the following
Phototropism
Florigen and its role
Cytokinin and its role
Electron Transport System
5. What do you understand by the term vernalization Describe the mechanism of vernalization.
GROUP
6. What Properties of enzymes Describe mechanism of action of enzymes.
7. What are secondary metabolites Describe different roles played by these metabolites.
8. Write short notes on any two of the following
Co-enzymes
Different types of amino acids
Transamination
Chemical Structure of Chlorophyll
9. Describe different types of Vitamins. How are they synthesized.
10. Write short notes on any two of the following
Nitrification
Nucleic acid
Kerb's cycle
N2 fixing bacteria