Zoology CSS Paper I 2008

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS
IN BPS – 17 UNDER THE FEDERAL GOVERNMENT, 2008.

Zoology I

SECTION I

NOTE: Solve 2 questions from each section. Total of four questions.

Q 1. a : Write an essay on “Protozoa and diseases” 10
b. What are coral reefs? Give an account of various forms of coral reefs.6
c. Coelenterates show some resemblances with Porifera. Discuss briefly 4

Q2: a Give an account of canal system in sponges. 10
b. what is adaptation? Briefly discuss parasitic adaptations in platyhelminthes.
c. define the following terms. 4 marks.
1. Polymorphism 2. Metamerism 3. parasitism 4. osmoregulation.

Q3 Describe water vascular system of Echinodermata. 10 marks.
b. Give an account of human diseases caused by nematodes. 7 marks.
c. what is conjugation? Briefly discuss its significance 3 marks

Q4. write short notes on:
1. torsion in gastropods 2. flame cells 3. spicules 4.coelom.

SECTION II

Q5 a write an essay on flight adaptations of birds. 10 marks
b. what is cleavage? Describe its types , with example found in chordates. 6 marks.
c. what are the functions of blood. 4 marks.

Q6. what is placenta? Give its classification in mammals according to the mode of implantation.
b. describe various types of heart found in vertebrates. 8 marks
c.give classification of vertebrate eggs according to the quantity of yolk they contain. 4 marks.

Q7 write short notes on
1. uriniferous tubule of a mammal 2. neuron 3. function of skin 4. structure of bone.