Bota 233: Mycology Question Paper

Bota 233: Mycology

Course:Bachelor Of Education Science

Institution: Chuka University question papers

Exam Year:2013

CHUKA

UNIVERSITY

UNIVERSITY EXAMINATIONS
SECOND YEAR EXAMINATIONS FOR THE AWARD OF
BACHELOR OF EDUCATION (SCIENCE)
BOTA 233: MYCOLOGY
STREAMS: BED (SCIE) Y2S2 TIME: 2 HOURS
DAY/DATE: TUESDAY 23/4/2013 2.30 PM – 4.30 PM
INSTRUCTIONS:

SECTION A (ANSWER ALL QUESTIONS)

1. Explain the nuclear status of fungi. [4 Marks]

2. Using illustrations, explain the following modes of plasmogamy exhibitedduring sexual reproduction in fungi.

(i) Gametangial copulation [3 Marks]

(ii) Gametangial contact [3 Marks]

3. Name and draw the different types of ascocarps exhibited by the fungal class ascomycetes. [6 Marks]

4. Describe the two types of mycorrhizae. [5 Marks]

5. Explain the various types of conidia produced by fungi. [5 Marks]

6. With reference to aquatic forms briefly describe fungal ecology. [4 Marks]

SECTION B. (ANSWER ANY TWO QUESTIONS)

7. Write an essay on “The Commercial importance of fungi”. [20 Marks]

8. Describe the life cycle of each of the following fungal species

(i) Plasmodiophora brassicae [10 Marks]

(ii) Pythium debaryanum [10 Marks]

9. Giving specific examples, discuss the human diseases caused by pathogenic fungi.
[20 Marks]

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