Agricultural Zoology Question Paper

Agricultural Zoology

Course:Bachelor Of Science In Agricultural Economics

Institution: Kenyatta University question papers

Exam Year:2008

KST 101:
AGRICULTURAL ZOOLOGY
DATE: Wednesday, 26th November, 2008
TIME: 11.00 a.m. – 1.00 p.m.
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INSTRUCTIONS:
Answer ALL questions in Section A and any TWO questions in Section B. Illustrate
your answer with labelled diagrams where appropriate.
SECTION A
(40 marks)
1.
Describe the various categories of insects body plan

(5 marks)
2.
Describe briefly divergent and convergent evolution

(5 marks)
3.
Compare gaseous exchange in insects and mammals

(5 marks)
4.
Describe osmoregulatory mechanisms in fresh and salty water fish are different

(5 marks)
5.
Discuss briefly behavioural mechanisms of temperature regulation in animals

(5 marks)
6.
Describe the differences between oviparity and viviparity in animals

(5 marks)
7.
Discuss the structure of a typical motor neuron

(5 marks)
8.
List down the functions of blood

(5 marks)
SECTION B
(30 marks)
9.
Write an essay on distinguishing characteristic features of the phylum arthropoda
and its major subdivisions

(15 marks)
10.
Discuss the excretory systems in multicellular organisms
(15 marks)
11.
Discuss the structure and functions of various regions of the digestive system in
animals.
12.
Discuss the economic importance of animals to the Kenyan economy

(15 marks)

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