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Bota 411:Mycology December 2009 Question Paper

Bota 411:Mycology December 2009

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2009

KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2009/2010 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF EDUCATION
SCIENCE
COURSE CODE: BOTA 411

INSTRUCTIONS:
Attempt all Questions in Section A and Any Two in Section B.
SECTION A (40 MARKS)
1. (a) Write explanatory notes on the following;
(i) Oogamous sexual reproductions
(ii) Anisogamy
(iii) Aplanogametes (3 Marks)
(b) Differentiate between sporangiospore and conidia (3 Marks)
(c) Describe four reasons why fungi are different from plants. (4 Marks)

2. (a) Describe the distinguishing characteristics of the slime moulds. (5 Marks)
(b) Describe five criteria on which fungi are classified. (5 Marks)

3. (a) Describe the salient features of the zygomycytes. (5 Marks)
(b) Describe the complete life cycle of Rhizopus stolonifer and state its
mode of nutrition. (5 Marks)

4. (a) Which fungi cause the following diseases of crop plants?
(i) Downing mildews of grapes
(ii) Potato blight (2 Marks)
(b) Briefly outline the sexual reproduction and formation of an Ascocap in Asconyceles.
(8 Marks)

SECTION B (30 MARKS)
5. With aid of simple diagrams describe the following methods by which compatible
gametes are brought together through plasmogany
(i) Gametongial contact
(ii) Gametongial copulation
(iii) Spermatization (15 Marks)

6. Describe in details how conjugate division of the kikaryotic cell occurs showing
the formation of Clamp connection in basidiomycles. (15 Marks)

7. Discuss the economic importance of fungi citing. Agriculture, medicine, industrial
and their ecological impact. (15 Marks)

Bota 411:Mycology December 2009 Question Paper

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