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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034 M.Sc.DEGREE EXAMINATION BIOTECHNOLOGY THIRDSEMESTER APRIL 2017
BT 3823- PLANT BIOTECHNOLOGY
Date: 28-04-2017 Dept. No. Max. 100 Marks
09:00-12:00 PART A Answer all the questions
I. Choose the correct answer(5 x 1 5 Marks)
1. The Father of plant tissue culture is
Norman Borlaug Karl Ereky Ross Harrison Gottlieb Haberlandt
2. A good source for chitinase genes
Sunflower b)Bacillus Tobacco hornworm Daffodils
3. The hormone which plays an important role in callus induction
BAP GA3 TDZ
4. The herbicide resistance has been developed in crops using
Protease inhibitors bar gene Bt gene Lectins
5. Chlamydomonasproduce carbohydrates such as
Arabinose Xylose Rhamnose Glucose
II. State whether the following are true or false(5 x 5 Marks)
6. Male sterile plants can produce viable eggs.
7. Alpha amylase inhibitors are used to develop bacterial resistant crops.
8. IBA is a rooting hormone.
9. Ingo Potrykus first developed the Bt corn.
10. Cephalosporins are secondary metabolites produced by Spirulina.
III. Complete the following(5 x 1 5 Marks)
11. Virus free plants can be raised culture.
12.GBNV stands
13. photoreceptor proteins like flavoproteins that mediate phototropism responses in higher plants.
14. Model plant used for genetic studies
15. An example for green algae
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IV. Answer the following, each within 50 words(5 x 1 5 Marks)
16. Mention the role of cytoplasmic male sterility in agriculture?
17. Define PR proteins.
18. Which pathway is used in biosynthesis of auxin?
19. Distinguish between Ri Plasmid and Ti Plasmid.
20. Which fungi produce taxol?
PART B Answer the following, each within 500 words.
Draw diagrams wherever necessary. × 8 40 Marks)
21. How are secondary metabolites produced through plant tissue culture? OR Write a short note on somatic embryogenesis.
22. Give a note on chitinase and glucanase genes and their role in fungal resistance. OR
Explain the physical methods of plant gene transformation.
23. Briefly describe the role of harmones in plant tissue culture. OR
What are seed storage proteins? Write briefly on the different kinds of seed storage proteins in legumes.
24. Agrobacterium tumefaciens is called as natural genetic engineer. Justify OR Discuss the role of nif genes in increasing crop productivity
25. Write briefly on mass cultivation of blue green algae. OR
What is VAM? Add a brief note on its importance.
PART C Answer any TWO of the following, each within 1500 words; Draw diagrams wherever necessary. × 20 40 Marks)
26. How are hybrids produced under in vitro culture technique.
27. Give an account on the importance of insect resistant genes in agricultural biotechnology.
28. Explain in detail the applications of transgenic plants.
29. Write a detailed account on the occurrence, distribution and economic importance of algae.