Botany CSS Paper 2020

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION – 2020
FOR RECRUITMENT TO POST IN BS – 17
UNDER THE FEDERAL GOVERNMENT

BOTANY

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.
(iv) Extra attempt of any question or any part of the attempted question will not be considered.

PART-II

Q. No. 2. Discuss evolution of vascular bundles in tracheophytes. (20)

Q. No. 3. Describe process of fertilization for an angiospermic plant with significance of double fertilization. (20)

Q. No. 4. Write a comprehensive account of Plant Growth Hormones. (20)

Q. No. 5. Give an account of structure of epidermis and describe various functions of its different cell types. (20)

Q. No. 6. Write a comprehensive account of light and dark reactions in plants. (20)

Q. No. 7. Describe various structural modification of roots, stems and leaves tissues in xerophytic plants. (20)

Q. No. 8. Write short notes on any FOUR of the following:- (5 each). (20)
(a) Theory of Natural Selection
(b) Economical importance of Rust and Smut
(c ) Causes and significance of Polyploidy
(d) Types of stele
(e) Evolution of sporophyte in Bryophytes

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