PUNJAB PUBLIC SERVICE COMMISSION
COMBINED COMPETITIVE EXAMINATION
FOR RECRUITMENT TO THE POSTS OF PROVINCIAL MANAGEMENT SERVICE -2022
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
Describe characteristic features of Diatoms with special reference to their structure, reproduction and ecology.
(20 Marks)
Q. No. 2
Differentiate between the following:
a. Rusts and Smut
b. Wilts and Rots
(10+10=20 Marks)
Q. No. 3
Write notes on:
a. Parasexual cycle in Fungi
b. Ascus and Basidium development.
(10+10=20 Marks)
Q. No. 4
Describe in detail the general characteristics, classification and economic importance of Bryophytes.
(20 Marks)
Q. No. 5
What is Heterospory? Explain seed habit in Selaginella. Also write why it failed to produce seed.
(20 Marks)
Q. No. 6
What are Seed Ferns? How they are classified? What is the evolutionary significance of Seed Ferns in Geological Time Scale?
(20 Marks)
Q. No. 7
Differentiate between Plesiomorphy and Apomorphy? How such terms are useful in determining the evolution in Angiosperms?
(20 Marks)
Q. No. 8
What is Numerical taxonomy? Write its principle, merits, demerits and its applications.
(20 Marks)
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