Balochistan Public Service Commission
Samungli Road, Quetta Cantt.
COMPETITIVE EXAMINATION FOR THE POST(S) OF BCS (EB) OFFICER B-17 / SECTION OFFICER B-17
ZOOLOGY
Total Marks: 150 | Wednesday, February 11, 2009 | Time Allowed: 03 Hours
Note:
(i) Attempt any Five questions.
(ii) At least One from each section.
(iii) Draw neat and fully labelled Diagrams wherever necessary.
(iv) All questions carry equal marks.
SECTION – I (Non-Chordata)
Q-1. (a) Describe in detail how in different classes of Protozoa Reproduction occurs to increase their number. (20)
Q-1. (b) What is the importance of “Coral Reefs” in the economy of any country? (10)
Q-2. (a) Describe the mechanisms of Locomotion Feeding and Digestion in a typical coelenterate you have studied. (20)
Q-2. (b) Enumerate the general characters of Phylum Annelida. (10)
Q-3. (a) Write an essay on the role of “Insects” in spread of diseases. (15)
Q-3. (b) Differentiate between symbiosis Commensalism and Parasitism. (15)
Q-4. Write a descriptive note on any Two of the following: (15+15)
(i) Types of foot in Mollusca.
(ii) Structure and function of Nephridia.
(iii) Water-Vascular system of Star-Fish.
SECTION – II (Chordata)
Q-5. What are distinguishing and general characters of Chordates? Describe various theories about their origin in detail. (15+15)
Q-6. How “Parental Care” could be observed in Birds and Mammals. Explain with the help of suitable examples. (30)
Q-7. Write notes on any Two of the following: (15×2)
(i) Biting mechanism in snakes.
(ii) Genital Organs of Uromastix.
(iii) Affinities of Balanoglossus.
SECTION – III (Principles of Biology)
Q-8. Define an Ecosystem. Elaborate your answer by describing its components in two examples: (30)
(i) Pond and (ii) Forest.
Q-9. Describe the structure and function of Mitochondria in detail. (30)
Q-10. (a) Discuss the Phenomenon of assorting of genes independently in a dihybrid cross which could elaborate Mendel’s law of Independent Assortment. (20)
Q-10. (b) Enlist the variety of Fauna of Balochistan. (10)
Good Luck
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