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Plant Growth And Development Question Paper

Plant Growth And Development

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2009/2010
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE
SBT 308:
PLANT GROWTH AND DEVELOPMENT

==============================================================

DATE:
MONDAY 21ST DECEMBER 2009 TIME: 11.00 A.M. – 1.00 P.M.

INSTRUCTIONS

Answer ALL questions in Section A and ANY ONE question in Section B.
Answers to Section A should be concise and should be written in the spaces provided in
the question paper.
Answers to Section B should be written in the booklet provided.

SECTION A: Short answer questions. (5 marks each)

1.
Discuss the phenomenon of vernalization in plants.

Page 1 of 6

2.
Discuss how auxins are controlled in plants.

3.
Explain five physiological effects of cytokinins in plants.

Page 2 of 6

4.
Discuss five commercial applications of plant growth substances in agriculture
and forestry.

5.
Outline the biosynthesis of indole-3-acetic acid in plants.

Page 3 of 6

6.
Describe the interactions of plant growth hormones in plant growth and
development.

7.
Discuss five effects of abscissic acid.

Page 4 of 6

8.
Explain the meaning of the following:
a)
Juvenility

b)
Senescence

c)
Phytochrome system

d)
Photoperiodism

e)
Morphogenesis

Page 5 of 6

SECTION B: Essay type Questions (30 marks)
1.
Discuss the bioassays of auxins.
2.
Write an essay on plant movements.
3.
Describe how growth and its measurements can be achieved in the greenhouse
and in the tissue culture laboratory.
Page 6 of 6

Plant Growth And Development Question Paper

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