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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034 B.Sc.DEGREE EXAMINATION PLANT BIOLOGY AND PLANT BIOTECHNOLOGY FIRSTSEMESTER APRIL 2017
PB 1505 PB 1502 PLANT DIVERSITY I (ALGOLOGY, MYCOLOGY, BRYOLOGY)
Date: 26-04-2017 Dept. No. Max. 100 Marks
09:00-12:00 Part A Answer the following, each within 50 words. (10 x 2 20 marks)
1. Define haplotoniclife cycle.
2. What are akinetes?
3. What is heterocyst?
4. Define diatomaceous earth
5. What is a parasite?
6. Distinguish between homothallic and heterothallic fungus.
7. What is the other name for Rhizopus? Why?
8. What is conidium?
9. What is the role of elaters?
10. Define peristome
Part B Answer the following, each within 500 words. Draw diagrams and flow charts wherever necessary. X 7 35 marks)
11. Give the distinguishing characters of Cyanophyceae.
b)Explain the asexual reproduction in algae.
12. Describe the cell structure of Anabaena.
Write the importance of biofertilizers.
13.a) Describe the salient features of Zygomycetes.
Give a brief note on nutrition in fungi.
14. Write short notes on yeast cloning.
Describe the method of asexual reproduction in Albugo.
15. Describe the thallus of Anthoceros
Comment briefly on the morphological nature of the male and female sex organs of Marchantia.
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Part C Answer any three of the following, each within 1200 words.
Draw diagrams and flow charts wherever necessary: X 15 45 marks)
16. Describe the life cycle patterns seen in algae.
17. Write an essay on economic importance of algae.
18. Describe the sexual reproduction in fungi.
19. Describe the life cycle of Puccinia.
20. Explain the sporophyte of Funaria.