PUNJAB PUBLIC SERVICE COMMISSION
COMBINED COMPETITIVE EXAMINATION
FOR RECRUITMENT TO THE POSTS OF PROVINCIAL MANAGEMENT SERVICE -2025
BOTANY (PAPER-I)
TIME ALLOWED: THREE HOURS
MAXIMUM MARKS: 100
NOTE:
1. All the parts (if any) of each Question must be attempted at one place instead of at different places.
2. Write Q. No. in the Answer Book in accordance with Q. No. in the Q. Paper.
3. No Page/Space be left blank between the answers. All the blank pages of Answer Book must be crossed.
4. Extra attempt of any question or any part of the question will not be considered.
Attempt FIVE Questions in All. Attempt in Urdu or English.
Q. No. 1: (a) Discuss phylogeny of Cyanophyta in view of recent studies.
(b) Give an account of economic importance of Cyanophyta.
Q. No. 2: Write notes on:
(i) Salient features of class LIVERWORTS (Hepaticae)
(ii) Economic importance of BRYOPHYTES
Q. No. 3: Give a comparison of gametophytes of Riccia and Porella.
Q. No. 4: (a) Discuss in detail various reproductive structures in Pteridophytes.
(b) Describe the structure and life cycle of SELAGINELLA.
Q. No. 5: (a) Why Cycas is called as “Living Fossil”?
(b) Explain life history of a typical gymnosperm.
Q. No. 6: (a) Give a comparison of Bentham & Hooker and Engler & Prantl’s systems of classification.
(b) Explain the terms:
i. Holotype ii. Isotype iii. Lectotype iv. Syntype v. Paratype
Q. No. 7: (a) What is Classification? Discuss various Classification Schemes for categorizing plants into various groups.
(b) What is Binomial nomenclature? How it is useful for assigning names to plants?
Q. No. 8: (a) Explain in detail the development of a dicot embryo.
(b) Define double fertilization. Also describe process of seed and fruit formation.
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