BALOCHISTAN PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR THE POSTS OF
ASSISTANT COMMISSIONER B-17 / SECTION OFFICER (B-17)
IN THE S&GA DEPARTMENT
BOTANY
Total Marks: 150 December 06, 2016 Time Allowed: 03 Hours
Note: Attempt any five questions. Question No.1 is compulsory, all questions carry equal marks, draw diagram where necessary.
Q No -1 (i) Which of the following is not present in all Bacteria?
- Cell membrane b. Chromatin body c. Ribosome d. Capsule
(ii) Leguminous plants are host to
- Rhizobium b. Mycorrhiza c. Lichens d. Algae
(iii) All such Fungi in which sexual phase has not been observed are present in
- Zygomycota b. Ascomycota c. Basidiomycota d. Deuteromycota
(iv) All the following plants group possess phloem parenchyma except
- Dicot b. Monocot c. Gymnosperm d. Pteridophytes
(v) Which of the following is an example of living member of Psilopsida
- Rhynia b. Psilophyta c. Psilotum d. Cooksonia
(vi) Cytokinin treatment enhances
- Chlorophyll degradation b. Protein degradation c. Chlorophyll synthesis d. Water uptake
(vii) Casparian strips are found in:
- Endoderm b. Epiderm c. Periderm d. Hypoderm
(viii) Thylakoid membrane are involved in ATP synthesis by:
- Photolysis b. Chemiosmosis c. Photophosphorylation d. Redox process
(ix) Pairing of homologous chromosome is completed in
- Leptotene b. Pachytene c. Diplotene d. Zygotene
(x) During respiration Yeast converts glucose to:
- Ethanol and H2O b. Ethanol and O2 c. Ethanol and CO2 d. Lactic acid and CO2
Section-I
Q No -2 (A) Explain the trends from Unicellular to Multicellular organization in Algae
(B) How Prokaryotes play role in Nitrogen Fixation
Q No -3 (A) Describe the development and structure of Fructification of any member of Basidiomycete
(B) Mention economic importance of any Saprophytic Fungus
Q No -4 (A) What is Heterospory? Illustrate your answer with reference to life cycle of Selaginella
(B) How seed habit has evolved in higher plants
Section-II
Q No -5 (A) Differentiate between primary and secondary growth
(B) Describe internal structure of Bifacial leaf
Q No -6 (A) Discuss active and passive mechanism of mineral salt absorption
(B) Describe the most accepted theory about translocation of water in higher plants
Q No -7 Write notes on any THREE:
(A) Water Logging and Salinity
(B) Linkage and Crossing Over
(C) DNA finger printing and its uses
(D) Alternation of generation in Bryophytes
(E) Biotic and abiotic components of an Ecosystem
Good Luck
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Answer Key
1 (i) d. Capsule
1 (ii) a. Rhizobium
1 (iii) d. Deuteromycota
1 (iv) b. Monocot
1 (v) c. Psilotum
1 (vi) c. Chlorophyll synthesis
1 (vii) a. Endoderm
1 (viii) b. Chemiosmosis
1 (ix) d. Zygotene
1 (x) c. Ethanol and CO2
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