Balochistan Public Service Commission
COMBINED COMPETITIVE EXAMINATION FOR THE POSTS OFÂ
BCS(EB)/SECTION OFFICER(B-17) IN THE S&GAD GOVT. OF BALOCHISTAN
ZOOLOGY
Time Allowed 03 Hours
July 19, 2010 (2:30PM)
Total Marks 150
Note Attempt Five questions selecting at least One from each section. All questions carry equal marks. Draw labeled Diagrams wherever necessary.
SECTION – I (NONCHORDATA)
Q-1 a How protozoa obtain nourishment from the environment? Discuss. (20)
b What is economic importance of molluscs. (10)
Q-2 a Describe the mechanism of Asexual reproduction in sponges. (20)
b Give an account of skeleton in sponges. (10)
Q-3 a What are diagnostic features of Arthropoda? (15)
b Characterize and classify class insecta upto order level. (15)
Q-4 Write short notes on any two of the following (15×2)
i Comparison of Polyps and medusa.
ii Tornaria Larva.
iii Parasitic adaptation in Trematodes.
SECTION – II (CHORDATA)
Q-5 a What are distinguishing features of chordates and vertebrates? (15)
b Discuss Affinities of Balanoglossus. (15)
Q-6 Elaborate the concept of Aerial adaptations in Birds. (30)
Q-7 Write short notes on any two of the following (15×2)
i Poisonous Snakes.
ii Genital Organs of Pigeon.
iii Prototheria and Metatheria.
SECTION – III (CHORDATA)
Q-8 a Define ecosystem and its components also enlist available ecosystems of Balochistan. (20)
b Describe Nitrogen cycle in detail. (10)
Q-9 a Briefly describe the sub-stages of Prophase I. (15)
b Give a detailed comparison of mitosis and Meiosis. (15)
Q-10 Why conservation of wild fauna is considered essential? Discuss status and distribution of Wild Mammals of Balochistan? (30)
Good Luck
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