PUNJAB PUBLIC SERVICE COMMISSION
COMBINED COMPETITIVE EXAMINATION
FOR RECRUITMENT TO THE POSTS OF PROVINCIAL MANAGEMENT SERVICE -2020
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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 the economic importance of Cyanophyta
b) Write a note on distribution and general characteristics of Phaeophytes
(10+10=20 Marks)
Q. No. 2:
a) Describe the structure of a fungus. How a fungal body is different from a plant
b) Describe the importance of fungi for mankind
(10+10=20 Marks)
Q. No. 3:
a) Write a note on the evolution of sporophyte in Bryophytes
b) Describe the differences between liverworts and mosses
(10+10=20 Marks)
Q. No. 4:
a) Discuss the characteristic features of Pteridophytes
b) Write a note on evolution of seed
(10+10=20 Marks)
Q. No. 5:
a) Describe the evolutionary tendencies of Cycadophytes
b) Write a note on life history of conifers
(10+10=20 Marks)
Q. No. 6:
a) Describe the rules of Plant Nomenclature
b) Write a note on importance of Botanic Gardens
(10+10=20 Marks)
Q. No. 7:
a) Give the structure and function of epidermal hairs and bulliform cells
b) Write a note on abnormal secondary growth in dicots
(10+10=20 Marks)
Q. No. 8:
a) What is polyembryony? Give its types and practical significance in plants
b) Explain the development of micro gametophyte and male gametes in angiosperms
(10+10=20 Marks)
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