Vertabrate Zoology Question Paper
Vertabrate Zoology
Course:Bachelor Of Science In Biochemistry
Institution: Egerton University question papers
Exam Year:2003
UNIVERSITY EXAMINATIONS
SECOND SEMESTER 2002/2003
FIRST YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE AND BACHELOR OF EDUCATION (SCIENCE)
ZOOL 103: VERTEBRATE ZOOLOGY
TIME: 2 HRS
INSTRUCTIONS:
Answer ALL questions in Section A and One question in Section B.
SECTION A ( 50 MARKS).ANSWER ALL QUESTIONS
1.Describe how the Salmon locate their ancestral grounds during homing.(5 marks)
2. "Arboreal lizards regulate their body temperature by behavioral means."
Explain how this is achieved.(5 marks)
3. Outline the special characteristics of calls in birds.( 5 marks)
4.List five functions of odoriferous glands in mammals.(5 marks)
5.Name five examples that illustrate the economic importance of snakes to man.(5 marks)
6.What is the importance of migration in birds and what stimulates it?( 3,2 marks)
7.Explain briefly the importance of classifying animals among Zoologists.(5 marks)
8.Name five purposes served by sound production in bony fishes.(5 marks)
9.Describe polygyny as a mating system in mammals.(5 marks)
10.Identify the periods of the geological time scale associated with the following events:
(i) Appearance of therapsids.(1 mark)
(ii) Appearance of modern mammals.(1 mark)
(iii) Extinctions of dinosaurs.(1 mark)
(iv) Appearance of reptiles.(1 marks)
(v) Extinction of ostracode.(1 mark)
SECTION B (20 MARKS).ANSWER ONE QUESTION
11.Describe flight adaptations in birds.(20 marks)
12. "Reptiles are more adapted to a terrestrial life than amphibians." Discuss this statement.(20 marks)
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