DISTANCE EDUCATION
M.Sc. (Botany) DEGREE EXAMINATION, MAY 2016.
(Specialization Plant Biotechnology)
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2008 Onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
20 100)
1. Briefly explain the mechanism of stomatal
movement.
Explain the process of water absorption in plants.
Comment on
Diffusion
Osmosis.
2. Explain the electron transport pathway in
chloroplast membrane.
Describe C4 carbon cycle.
Write short notes on ultrastructure of
Photosynthetic apparatus.
3. Give short notes on glycolysis.
Discuss about biological nitrogen fixation.
Describe the TCA cycle.
Sub. Code
21
DE-3854
2
Ws9
4. Write an essay on structure of protein.
Comment on stereoisomers.
Write short notes on classification of carbohydrates.

5. Give an account on nucleotide synthesis.
Describe Michaelis Menton equation and its
significance.
Comment on isoenzymes.
6. Explain the process of water absorption in plants.
What are the factors affecting transpiration?
Add a note on cyanide resistant pathway.
7. Write short notes on pentose phosphate pathway.
Explain the characteristics of amino acid.
Give an account on Crassulacean acid metabolism.

8. Describe the photo phosphorylation.
Write briefly about fatty acid biosynthesis.
Explain the tertiary structure of protein.