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P.T.O.
MAR IVANIOS COLLEGE (AUTONOMOUS)
THIRUVANANTHAPURAM
Reg. No.:.………………… Name:...…………………
Second Semester B.Sc. Degree Examination, June 2016
First Degree Programme under CBCSS
Complementary Course: Botany II (for Zoology)
AUBO231.2e: Phycology, Mycology, Lichenology, Bryology, Pteridology, Gymnosperms and Plant Pathology
Time: 3 Hours Max. Marks: 80
SECTION A
Answer ALL questions in one or two sentences.
1. Nannandrium
2. Stone worts
3. Heterocyst
4. Pycnidium
5. Pycnoxylic wood
6. Cleistothecium
7. Dikaryon
8. Dwarf shoots and long shoots
9. Holocarpic fungi
10. Protonema
(10 x 1 10 Marks)
SECTION B
Answer any EIGHT questions, each in a short paragraph not exceeding 50 words.
11. Bordeaux mixture.
12. What is Cystocarp
13. Explain the mechanisms of reproduction in Rhizopus.
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14. Write the economic importance of Chlorella.
15. Explain the structure of female cone in Pinus.
16. Give the salient features of Usnea apothecium.
17. Write a note on asexual reproduction in Penicillium.
18. Explain the structure of Rhizophore in Selaginella.
19. Explain the thallus structure of Nostoc.
20. Enumerate the economic importance of Bryophytes.
21. Rust fungi are called polymorphic. Why
22. Outline the steps involved in the cell division of Oedogonium.
x 2 16 Marks)
SECTION C
Short essay type Answer any SIX questions.
23. Explain the structure of Funaria sporophyte.
24. What are Lichens Explain different types of lichens and how they are important
25. With the help of a suitable diagram describe the internal structure of Peziza apothecium.
26. Write the causative organism, symptoms and control measures of Quick wilt of Pepper.
27. Explain the structure of Pinus needle and mention its xerophytic adaptations.
28. Enumerate the beneficial and harmful effects of Fungi.
29. Explain the thallus structure of Sargassum. Add a note on their receptacles.
30. Give an account of the sex organs in Chara.
31. Enumerate the structure of Pteris petiole.
x 4 24 Marks)
SECTION D
Long essay type Answer any Two questions.
32. With the help of suitable diagrams, explain the life cycle of Puccinia.
33. Give an account on the life cycle of Polysiphonia.
34. Enumerate the thallus structure, reproduction mechanisms and life cycle in Riccia.
35. Explain the life cycle of Selaginella. Add a note on Heterospory and seed habit.
x 15 30 Marks)