BALOCHISTAN PUBLIC SERVICE COMMISSION
Samungli Road, Quetta Cantt.
COMPETITIVE EXAMINATION FOR THE POST(S) OF BCS (EB) OFFICER B-17 / SECTION OFFICER B-17
BOTANY
Total Marks:150 Tuesday, February 10, 2009 Time Allowed: 03 Hours
Note: Attempt any Five questions. All questions carry equal marks. Draw labelled diagrams wherever necessary.
Q-1 Explain the role of Bacteria in relation with Nitrogen Cycle. Describe the importance of Bacteria in manufacturing of industrial products.
Q-2 Describe the Sex organs of Chara, Explain development and germination of it’s Oospore.
Q-3 Explain the life cycle of Puccinia with reference to the nature of spores at particular stages.
Q-4 What is Heterospory? Explain the structure of Sporangiferous Spike of Selaginella.
Q-5 What is Secondary Growth? Describe the process of Secondary Growth in Dicotyledonous Stem.
Q-6 Describe the various processes involved in the transformation of Energy in Photosynthesis.
Q-7 What do you mean by Soil conservation? Suggest and describe the way by which Soil Erosion can be controlled.
Q-8 Write short notes on any Three of the following:-
- a) Chemical composition and Replication of DNA.
- b) Sporophyte of Marchantia.
- c) Morphology of Male and Female Cone of Pinus.
- d) Cystocarp of Polysiphonia.
- e) Aerobic Oxidation of Pyruvic Acid.
Good Luck
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