Acharya Nagarjuna University (ANU) 2005 M.Sc Information and Communication Technology PLANT PHYSIOLOGY AND METABOLISM - Question Paper

M.Sc. (Previous) DEGREE EXAMINATION,
DECEMBER 2005.
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.
ans ALL the ques. from part B.
every ques. carries 15 marks.
part A - (5x8=40 marks)

1.Choesion - tension theory.
2. Surface tension.
3. Km value of an enzyme.
4. Structure of PSI complex.
5. Transamination.
6. -oxidation of fatty acida.
7. Synthesis of ethylece.
8. Signal transduction.

part B -(4x15=60 marks)

9. (a) Write an essay on the latest theories explaining the mechanism of transporation.

Or

(b) Briefly explain on water potential and its components. add a note on any 1 method of determining.

10. (a) discuss the mechanism of C4 pathway. WhyC4 plants are more efficient than plants?

Or

(b) Write an essay on pentose phosphate pathway and its significance.

11. (a) define briefly the mechanism of fixation by Rhizobia bacteria.

Or

(b) elaborate fats? explain on the role of malonyl Co A and falty acid synthase in the biosynthesis of falty acids.

12. (a) Write briefly on the mechanism of action of cytokinins inplants. Add a note on their role in agriculture.

Or

(b) discuss the role of phytochromes in plantmorpho genesis.

Earning:   Approval pending.