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 EXAMINATION FOR THE AWARD OF DEGREE OF
BACHELOR OF EDUCATION (SCIENCE)
BOTA 233: MYCOLOGY
STREAMS: BED (SCI), BSC Y2S1 TIME: 2 HOURS
DAY/DATE: TUESDAY 6/8/2013 2.30 PM - 4.30 PM
INSTRUCTIONS:
Section A – 30 Marks (Answer All the Questions)
1. (a) State four ways by which fungi obtain their energy for growth. [2 marks]
(b) Explain the spherale mechanism of fungal spore release. [3 marks]
2. Using illustrations differentiate between gametantial contact and gametangial copulation as mechanisms of genetic variability in fungi. [4 marks]
3. Explain how myxomycetes differ from true fungi. [3 marks]
4. Describe the phases involved in industrial fermentation of beer. [6 marks]
5. (a) Explain fungi as
(i) Antibiotic producers [2 marks]
(ii) Biocontrol agents [2 marks]
(b) Give four applications of recombinant DNA technology. [2 marks]
6. Describe the following fungal diseases in humans
(i) Tinea pedis [3 marks]
(ii) Aspergillosis [3 marks]
Section B – 40 Marks (Answer any Two Questions)
7. Write an essay on mycotoxins as fungal secondary metabolites. [20 marks]
8. Discuss the methods used in storage and maintenance of fungal cultures. [20 marks]
9. Describe the lifecycle of the following fungal species
(i) Dictyostelium disciodeum [10 marks]
(ii) Taphrinia deformans
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