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P.T.O.
MAR IVANIOS COLLEGE (AUTONOMOUS)
THIRUVANANTHAPURAM
Reg. No.:.………………… Name:...…………………
Third Semester B.Sc. Degree Examination, November 2016
First Degree Programme under CBCSS
Core Course: Botany II
AUBO341: Microbiology, Phycology, Mycology, Lichenology and Plant Pathology
for 2014 Admissions Improvement Only
Time: 3 Hours Max. Marks: 80
SECTION A
Write short notes on ALL the following.
1. Sargasso sea
2. Capsid
3. Name any four commercial products from algae
4. Rhizines
5. Floridean starch
6. Plasmodium
7. Conidia
8. Isidia
9. Coprophilous fungi
10. Biofertilizer
(10 1 10 Marks)
SECTION B
Answer any EIGHT questions, not exceeding one paragraph.
11. What is perithecium Explain with a diagram and example.
12. Explain sexual reproduction in Usnea.
13. Describe the structure of nucule of chara with the help of a diagram.
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14. What is the composition of Bordeaux mixture
15. What are algal blooms
16. What are fairy rings
17. Describe the symptoms and control measures of Root wilt of coconut.
18. Give a brief account on pigments in algae.
19. What is food spoilage Give the different methods by which food spoilage occurs.
20. Give the thallus structure of Pinnularia with suitable diagram.
21. Describe asexual method of reproduction in Rhizopus.
22. Give the structure of T M V.
2 16 Marks)
SECTION C
Short essay type Answer any SIX questions.
23. Give a brief account on host parasite interaction.
24. Describe the different ways by which sexual reproduction achieved in bacteria.
25. Enumerate the important characteristics of Agaricus.
26. Describe the sexual reproduction in Oedogonium with diagram.
27. Give the main features of discomycetes with suitable example.
28. Enlist the economic importance of Lichen.
29. What are the General features of Myxomycetes
30. Classify the bacteria based on flagellation.
31. Explain the sexual reproduction in Pencillium.
4 24 Marks)
SECTION D
Long essay type Answer any Two questions.
32. Enumerate the general characters and economic importance of fungi.
33. Describe the life history of Saccharomyces with diagram.
34. Explain the life history of Polysiphonia with diagram.
35. Explain the different spore stages in the life history of Puccinia with diagram.
15 30 Marks)