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Bota 100: General Botany Question Paper

Bota 100: General Botany

Course:Bachelor Of Science In Environmental Science

Institution: Kabarak University question papers

Exam Year:2012

KABARAK
UNIVERSITY

UNIVERSITY EXAMINATIONS
2011/2012 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF SCIENCE IN
ENVIRONMENTAL SCIENCE

BOTA 100: GENERAL BOTANY
DAY: TUESDAY

DATE: 07/08/2012
TIME: 2.00 – 4.00 P.M.

STREAM: Y1S1

INSTRUCTIONS:
Answer ALL Question in section A and any other TWO in section B

SECTION A (40 Marks)
1. (a) Explain the meaning of the following terms.
i) Thallophyta
(2marks)
ii) Plastids
(2marks)
iii) Radial Symmetry
(6marks)
(b) Describe and illustrate the following
i) Axile placentation
ii) Hypogynous superior ovary
(4marks)
iii) Peptide bond
iv) Nucleotide
2. (a) State functions of three named
(i) Polysacharides
(3marks)
(ii) Lipids
(3marks)

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(b) Explain and illustrate how a phospholipid differs from a neutral
Fat.
(4marks)

3. (a) Explain how an enzyme lowers the required energy of activation for reaction.
(5marks)
(b) Differentiate between C3 and C4 carbon fixation pathways (5marks)

4. (a) Name the 3 tissues systems found in plants (3marks)
(b) Describe how the internal structure of a diostleaf is related to its functions
of photosynthesis, gas exchange and transpiration. (7marks)

SECTION B (30 marks)
5. Summarise the 3 phases of the Calvin cycle and indicate the role of ATP and NADPH in
the process.

(15marks)
6. (a) State the objectives of taxonomy

(3marks)
(b) Discuss various sources of taxonomic information

(15marks)
7. Solanaceae and Malvaceae are two important families of Angiosperms. Discuss the
characteristics of each family and state their economic importance
(15marks)

Bota 100: General Botany Question Paper

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