DSC291: Paper IV: Plant Physiology, Plant Breeding and Tissue Culture

I. Simple answer questions 10 X 10 Marks
Answer in a word, or a phrase or a sentence.
1. What is chesard
2. Define Thylakoid.
3. What is layering
4. What is Hypotonic solution
5. What is Photorespiration
6. What is Caulogenesis
7. What is Recurrent selection.
8. Define "Respiratory quotient"
9. Expand IAA.
10. Define Transamination.
II. Short answer questions
Answer any FIVE of the following. 5X3= 15 Marks
11. Explain the advantages of embryo culture.
12. Explain the structure of Root hair.
Contd…2



13. Describe Sigmoid curve.
14. Write a note on applications of pure lines.
15. What are the aims and scope of tissue culture.
16. Explain protoplasmic streaming theory.
17. Describe the functions of Gibberellins.
III. Medium answer questions
Answer any FIVE of the following. 5X6= 30 Marks
18. Write the differences between Aerobic and anaerobic respiration.
19. Explain the objectives of plant breeding.
20. Explain the factors affecting organogenesis.
21. Explain the mechanism of photoperiodism.
22. Explain Guttation.
23. Explain Root nodule formation.
IV. Long answer questions 2X10=20 Marks
Answer any TWO of the following.
24. Explain Dark reaction.
25. Explain the procedure of Hybridization.
26. Explain terminal oxidation.
27. "Transpiration is a necessary evil". Discuss.
V. Compulsory question for 85 marks scheme only. Long answer questions.
Answer any ONE of the following. 1X10=10 Marks
28. Explain the steps involved in Somatic hybridization.
29. Explain the mechanism of mineral absorption.