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Bontay - Faisalabad Re-Exam 2013
Federal Public Service Commission Re-Examination of Competitive Examination For Recruitment to Posts in BS-17 Under The Federal Government, 2013 Botany Paper-I TIME ALLOWED: 2 HOURS & 30 MINUTES ..............MAXIMUM MARKS:80 NOTE: (iii) Attempt Only FOUR question from Part II. All questions carry EQUAL marks. (iv) Extra attempt of any question or any part of the attempted question will not be considered. Part II Q.2. What is CAMBIUM? Describe its various types and structures. (20) Q. 3. Write a detailed account on merits and demerits of BENTHAM and HOOKER’s System of classification. (20) Q.4. Describe Histogen theory and Tunica-Corpus theory of MERISTEMATIC Tissue. (20) Q.5. Decribe general characteristics, important genera and economic importance of family FABACEAE. (20) Q.6. How CHARA reproduce vegetatively and Sexually? Discuss in detail the structure of male and female reproductive bodies of CHARA. (20) Q.7. Explain in detail the life cycle of PUCCINIA. What are various methods to control the disease caused by Puccinia? (20) Q.8 Write NOTES on any TWO of the following: (20)
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PAPER-II Q.No.2. Describe in detail the structure, physiology and action of phytochromes in plants. Also classify the plants with respect to their responses to daylight. (20)Q.No.3. What is photophosphorylation? Write a detailed note on light reaction at PSI and PSII.(20) Q.No.4. The plants as solitary component of nature are always subject to environmental perturbations. Describe in detail how do climatic and edaphic factors influence plant life. (20) Q.No.5. Salinity and water logging reduced plant productivity drastically. Give in detail their causes of occurrence and how saline and waterlogged soils can be reclaimed.(20) Q.No.6. Write note on the structure and function of nucleus, chloroplast, mitochondria and peroxisomes in a plant cell. (20) Q. No. 7. Give a detailed account of chromosomal aberrations. How they are important to evolutionary tendencies in plant. Q.No.8. Define evolution. Write detailed notes on the evolutionary theories put forward by Darwin and Lamarck. (20)
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