Botany CSS Paper II 2010

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FEDERAL PUBLIC SERVICE COMMISSION

COMPETITIVE EXAMINATION FOR

RECRUITMENT TO POSTS IN BS. 17

UNDER THE FEDERAL GOVERNMENT, 2010

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

Note:Attempt only four questions.All questions carry Equal marks.

Q.2 a) What is oxidative phosphorylation? How does it take place on the mitochondrial membrane and how is it associated with synthesis of metabolic energy? 10
b) What is pigment? Give the structures and chemical composition of all plant pigments involved in photosynthesis. 10

Q.3 Describe the structure ,transport, biosynthesis and mode of action of Auxins.

Q.4 a) Differentiate between Dark respiration and photo respiration. 10
b) Describe the salient effects of waterlogging on plants. 10

Q.5 What is ecosystem How is its composition affected by different environmental factors.?

Q.6 Write notes on following: 10×2
i) Genetic code ii) Gene transformation

Q.7 a) What are major factors which affect the evolution of a trait? 10
b) Describe ecological Energetics. 10

Q.8 Write short note on any TWO of following:
i) Photoperiodism
ii) Ultrastructure of chloroplast
iii) Conservation of natural resources

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