M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Botany
PLANT PHYSIOLOGY AND BIOPHYSICAL CHEMISTRY
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Turgor pressure
2. Trace elements
3. Hill Reaction
4. Glutamate dehydrogenase
5. Ethylene
6. Vernalin
7. Bioenergetics
8. Redox potential
9. Fluorescence spectroscopy
10. Surface plasma resonance.
Sub. Code
4MBO3C1
AFF-4905
2
Ws4
Part B x 5 25)
Answer all questions, choosing either or
11. Explain the active absorption of water.
Or
Mention the major elements and explain their role
in plants.
12. Describe Hatch Slack Pathway.
Or
Explain symbiotic nitrogen fixation.
13. Discuss briefly physiological role of auxins in plants.
Or
Describe the methods of breaking seed dormancy.
14. Write short account of covalent bonds.
Or
Explain the laws of thermodynamics.
15. Diagrammatically represent CD instrument and
explain its principle.
Or
Explain the basic principle of NMR.
Part C x 10 30)
Answer any three questions.
16. Give mechanism of salt absorption in plants.
17. Give a detailed account of Krebs cycle.
AFF-4905
3
Ws4
18. Describe fluorescence and phosphorescence.
19. Discuss the mitochondrial bioenergetics.
20. Explain how X-ray diffraction technique is used in the
determination of molecular structure.
————————