Andhra University 2007-1st Year M.Sc Information and Communication Technology botany first n 4 - Question Paper

(DBOT 04)

M.Sc. (Previous) DEGREE EXAMINATION, DECEMBER 2007.

First Year
Botany

Paper IV ? PLANT PHYSIOLOGY AND METABOLISM

Time : 3 hours Maximum :

100 marks

ans any 5 ques. from part A.

every ques. carries eight marks.

Also ans ALL the ques. from part B.

every ques. carries 15 marks.

part A ? (5 ? eight = 40 marks.)
1. Chemistry of Water.
2. Antitranspirants.
3. Cyanide Resistant Respiration.
4. RUBiscO.
5. Biochemistry of Nitrogen fixation.
6. Glyoxalate cycle.
7. Antigibberellins.
8. Vernalization.


part B ? (4 ? 15 = 60 marks.)

9. (a) What is meant by water potential? discuss any 2 methods of
measuring the components of water potential in plants.

Or
(b) discuss the Current views on the mechanism of Stomatal opening and
closing.
10 (a) provide an account on the latest advances in photochemistry of
light
with reference to Photosystem II.

Or
(b) Write critical note on the Ultra structure of Mitochondria and explain
the
mechanism of oxidative phosphorylation.
11 (a) provide brief mechanism of protein synthesis in Prokaryotes. How does it
differ
from Eukaryotes?

Or
(b) discuss briefly how fats are biosynthesised in plants.
12. (a) provide an account of physiological roles of Gibberellins along with their
commercial applications.

Or
(b) define and critically evaluate the mechanisms underlying
photoperiodic
induction of flowering in plants.

Earning:   Approval pending.