Balochistan Public Service Commission
COMPETITIVE EXAMINATION FOR THE POST(S) OF BCS (EB) OFFICER B-17
ZOOLOGY
Marks: 150 Saturday, March 10, 2007 (02:30 PM) Time: 03 Hours
Note:
(i) Attempt any Five questions selecting at least One from each section.
(ii) Draw neat and fully labeled diagrams wherever necessary.
(iii) All questions carry equal marks.
SECTION – I (NON-CHORDATA)
Q-1. (a) Discuss modes of Parasitism in Protozoa. (20)
(b) Enlist the general characters of Phylum Annelida. (10)
Q-2. (a) What is meant by polymorphism? Discuss this phenomenon with reference to Phylum Coelenterata. (4+16)
(b) Sketch only the Ambulacral system of Star-Fish. (10)
Q-3. (a) Describe the structure and function of appendages of any Anthropode you have studied.
(b) Give an account of Reproduction in sponges. (20+10)
Q-4. Write descriptive notes on any Three of the following: (10×3)
(i) Structure and Function of a Nephridium.
(ii) Types of Foot in Mollusca.
(iii) Coral Reefs.
(iv) Locomotion in Amoeba.
SECTION – II (CHORDATA)
Q-5. (a) What is meant by Origin of chordates? Describe various theories about it. (15)
(b) What are general and distinguishing characters of Chordates? (15)
Q-6. Discuss how birds migrate and its impacts on their life. (30)
Q-7. Write notes on any Two of the following: (15+15)
(i) Biting mechanism in Snakes.
(ii) Genital Organs of Uromastix.
(iii) Chondrichthyes.
SECTION – III (PRINCIPLES OF BIOLOGY)
Q-8. Define an Ecosystem? What are its different components? Discuss their role by quoting suitable examples. (4+26)
Q-9. Describe the structure and Functions of Ribosome. (30)
Q-10. Write notes on any Three of the following: (10×3)
(i) Law of Segregation.
(ii) Multiple Alleles.
(iii) Fauna of Balochistan.
(iv) Nitrogen cycle.
Good Luck
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