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Szl 202 Question Paper

Szl 202

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

SZL 202:
COMPARATIVE PHYSIOLOGY

DATE: Tuesday, 22nd December, 2009

TIME: 8.00 a.m. – 10.00 a.m.

INSTRUCTIONS:
Answer ALL questions in Section A and any ONE question in Section B. Within a
Section all questions carry equal marks. Illustrate your answers with diagrams and give
examples where appropriate.
Section A
Answer ALL questions (40 marks)
1.
Compare the organs of gaseous exchange in teleost fish and larval amphibians.

2.
Describe the enzymatic digestion of lipids in vertebrates.

3.
Outline the mechanisms of osmoregulation in insects.

4.
Explain how cardiac output contributes to the regulation of the cardiovascular
system of mammals.

5.
Outline the classification of neurons based on functions.

6.
State the functions of the following structures:
a)
Myelin sheath
b)
Vomeronasal organ

7.
State the mechanisms of food acquisition by fluid feeders.

8.
Outline the structural and functional differences between vertebrate and
cephalopod eyes.

Section B
Answer any ONE question. (30 marks)
9.
Describe in detail mechanoreception in invertebrates.

10.
Describe the asexual reproductive mechanisms of invertebrate and vertebrates
animals.

11.
Discuss the adaptations of endotherms to high environmental temperatures.