FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR
RECRUITMENT TO POSTS IN BS-17
UNDER THE FEDERAL GOVERNMENT, 2014
BOTANY – PAPER II
TIME ALLOWED: THREE HOURS
PART – I (MCQS): MAXIMUM 30 MINUTES
PART – I (MCQS): MAXIMUM MARKS = 20
PART – II: MAXIMUM MARKS = 80
NOTE: (i) Part – II is to be attempted on the separate Answer Book.
(ii) Attempt ONLY FOUR questions from PART – II. ALL questions carry EQUAL marks.
(iii) All the parts (if any) of each Question must be attempted at one place instead of at different places.
(iv) Candidate must write Q. No. in the Answer Book in accordance with Q. No. in the Q.Paper.
(v) No Page/Space be left blank between the answers. All the blank pages of Answer Book must be crossed.
(vi) Extra attempt of any question or any part of the attempted question will not be considered.
PART – II
Attempt any four questions, each question carries equal marks. (20 marks each)
Q No. 2: Describe the structure, biosynthesis, mode of action and physiological functions of gibberellins.
Q No. 3: Differentiate between Respiration and Photorespiration. Elaborate the mechanism of photorespiration along with structural formulae. Which types of cellular organelles are involved in this process?
Q No. 4: Environmental factors are crucial for plant growth. How do various climatic, edaphic and biotic factors affect plant growth?
Q No. 5: Soil Erosion is major problem in Pakistan. What are the causes of soil erosion? Hoe is soil erosion reclaimed? Justify your answer with respect to this problem in Pakistan.
Q No. 6: Differentiate between mitosis and meiosis. In which types of cells mitosis or meiosis occur? How id meiosis significant for living organisms?
Q No. 7: What are codon and genetic code? Elucidate the structure of gene. Succinctly describe the process of gene regulation in eukaryotes.
Q No. 8: List and describe various theories about the process of evolution. Elaborate this process with reference to theory of Neo-Lamarckism. What were the objections on this theory?