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Bota 210: Cryptogams Session V 2011 Question Paper

Bota 210: Cryptogams Session V 2011

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2011

COURSE CODE: BOTA 210
COURSE TITLE: CRYPTOGAMS

STREAM: SESSION V
DAY: SATURDAY
TIME: 9.00 – 11.00 A.M
DATE: 16/04/2011

INSTRUCTIONS:
ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO IN SECTION B

SECTION A (40 MARKS)
1. (a) Explain the meaning of the following terms;
(i) Homothallic
(ii) Anisogamy
(iii) Sporophyte
(iv) Chemosynthetic bacteria. (4 marks)

(b) Differentiate between the following.
a. Basidiocarp and bosidiomycetes
b. Ascogonium and ascomycetes
c. Antheridium and anitheridiophore (6 marks)

2. (a) Discuss the three morphological form of bacteria and give an example in each.
(6 marks)
(b) Explain the various nutritional methods by which bacteria obtain carbon
and energy. (4 marks)

3. (a) Define alternation of generation. (2 marks)
(b) With aid of a simple diagram describe the life cycle of a typical fresh water algae.
(8 marks)
4. Summarize the features that distinguish bryophytes from green algae and from
other plants. (10 marks)

SECTION B (30 MARKS)
4. Describe the environmental condition that led to the invasion of the land by plants
and explain the major environmental challenges that had to be overcome. (15 marks)

5. Describe the criteria used in the classifications of Algae and state the characteristics
shared by all six groups of Algae. (15 marks)

6. Describe in details the economic importance of bacteria. (15 marks)

Bota 210: Cryptogams Session V 2011 Question Paper

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