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Zool 314:Vertebrate Zoology April 2009 Question Paper

Zool 314:Vertebrate Zoology April 2009 

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2009



KABARAK UNIVERSITY
EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR EDUCATION SCIENCE
COURSE CODE: ZOOL 314

INSTRUCTIONS:
Answer All questions from Section A and Any TWO questions from Section B

SECTION A. (40 MARKS)
1. (a) Explain why the amphioxus is considered to be a model ancestor of vertebrates.
(8 Marks)
(b) State four features possessed by fishes that enable them to keep a float in water.
(4 Marks)

2. (a) List the four classes of integumentary glands in mammals. (4 Marks)
(b) Describe the adaptive radiation of reptiles. (6 Marks)

3. (a) Explain what is meant by the term paedomorphosis and state the group of animals which
depict this phenomenon. (4 Marks)
(b) State some of the challenges that tetrapods are faced with on their transition from aquatic
life to terrestrial life. (6 Marks)

4. (a) Outline the classification of modern amphibians. (6 Marks)
(b) Distinguish between viviparity and ovaparity. (4 Marks)

SECTION B (30 MARKS)
Answer any TWO (2) questions from this section
5. Discuss the adaptations that have guided vertebrate evolution. (15 Marks)

6. Describe the characteristics of reptiles that distinguish them from amphibians. (15 Marks)

7. Explain how birds are adapted to the mechanism of flight. (15 Marks)




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