B.Sc.(Botany):Plant physiology,Bio chemistry and Environmenatl Biology Annamalai University december question paper 2014

Annamalai University december question paper 2014
B.Sc. DEGREE EXAMINATION December 2014
(BOTANY)
(THIRD YEAR)
(PART-III)
730. PLANT PHYSIOLOGY, BIO-CHEMISTRY AND
ENVIRONMENTAL BIOLOGY
Time: Three hours Maximum: 100 marks
 SECTION – A
 Answer ALL questions
(10×3=30)
 1. Transpiration.
2. Photoperiodism.
3. Photosynthetic Pigment.
4. Passive Absorption.
5. Pentoses.
6. Transferases.
7. pH.
8. Environmental Factor- Rainfall.
9. Forest Ecosystem.
10. Acid Rain.
 SECTION – B
 Answer ALL questions
(8×5=40)
 11. a) Describe the Mechanism of diffusion.
(OR)
 b) Give an account on water potential and its components.
 12. a) Describe the role of plant growth regulators.
(OR)
 b) Explain the vernalization.
 13. a) Give an account on cyclic photophosphorylation.
(OR)
 b) Describe Glycolysis.
 14. a) Explain the Action Spectrum.
(OR)
 b) Write short note on C4 pathway.
2
 5322
 15. a) Explain the detail of classification of proteins.
(OR)
 b) Write short notes on properties of amino acids.
 16. a) Write an account on structure of Disaccharide.
(OR)
 b) Explain the role of humidity in ecosystem.
 17. a) Write an account on Nitrogen cycle.
(OR)
 b) Discuss about the concept of energy.
 18. a) Describe Ecological pyramid.
(OR)
 b) Explain the role of climatic factors in Ecosystem.
 SECTION – C
 Answer any THREE questions
(3×10=30)
19. Explain in detail about role of micro and macro nutrients in growth and
development.
20. Describe the Kreb’s cycle.
21. Write an essay on properties and classification of Carbohydrates.
22. Write an essay on edaphic factors and its role in Ecosystem.
23. Explain in detail about Environmental pollution and its control
measurements.
******* 

Share This