PUNJAB PUBLIC SERVICE COMMISSION
Combined Competitive Examination (CCE) 2019
For Recruitment to the Posts of Provincial Management Service (PMS)
SUBJECT: Botany (Paper-1)
Time Allowed: 3 Hours
Maximum Marks: 100
Attempt FIVE questions in all. Attempt in Urdu or English.
Q. No. 1:
a) Write on distribution and life history of Rhodophyta.
b) Give economic importance of Algae.
(10 + 10 = 20 Marks)
Q. No. 2:
a) How does the sporophyte and gametophyte of moss plant differ from that of a liverwort?
b) Give general account of Bryophytes.
(10 + 10 = 20 Marks)
Q. No. 3:
a) Describe modern system of plant classification with its basis.
b) Write a note on alpine and boreal forests.
(10 + 10 = 20 Marks)
Q. No. 4:
a) Describe the changes which enabled green plants to inhabit dry land environment.
b) How was seed evolved in land plants?
(10 + 10 = 20 Marks)
Q. No. 5:
Write short notes on the following:
a) Meristematic tissue
b) Ovule types in Angiosperms
c) Systematics
d) Double fertilization
(4 × 5 = 20 Marks)
Q. No. 6:
Explain evolutionary tendencies of Gymnosperms with examples.
(20 Marks)
Q. No. 7:
How does Cycas differ from Pinus?
(20 Marks)
Q. No. 8:
a) Describe development of male and female gametophyte in Angiosperms.
b) Describe structure of xylem in Angiospermic plants.
(10 + 10 = 20 Marks)
Q. No. 9:
Differentiate between the following:
i) Chlorophyta and Rhodophyta
ii) Spore and Gamete
iii) Oospore and Zoospore
iv) Prokaryotes and Eukaryotes
(4 × 5 = 20 Marks)
SUBJECT: Botany (Paper-II)
Time Allowed: 3 Hours
Maximum Marks: 100
Note: Attempt FIVE questions, including at least ONE question from each section. Attempt in Urdu or English.
SECTION – I
Q. No. 1:
a) Describe the importance of naturally occurring and synthetic plant hormones.
b) What is ascent of sap? Describe environmental conditions that affect plant water relations.
c) Write a note on biochemistry of proteins and fats.
d) Discuss the process of oxidative phosphorylation in plants.
(4 × 5 = 20 Marks)
Q. No. 2:
a) What are the physiological roles of cytokinins and abscisic acid in plant growth?
b) What is Donnan equilibrium? Explain this phenomenon with example.
(10 + 10 = 20 Marks)
SECTION – II
Q. No. 3:
a) What is the concept of productivity in an ecosystem? Describe its various types.
b) Describe the vegetation of Pakistan on the basis of climate, altitude, and plant types.
(10 + 10 = 20 Marks)
Q. No. 4:
a) What are in-situ and ex-situ conservations? Support your answer with local examples.
b) What is salinity? Give its causes and control measures in Pakistan.
(10 + 10 = 20 Marks)
SECTION – III
Q. No. 5:
a) What is cytosol (cytoplasmic matrix)? Give detailed account of its physical and chemical nature.
b) Define the ultrastructure of chromosome.
(10 + 10 = 20 Marks)
Q. No. 6:
a) Describe the significance of mitosis and meiosis.
b) What are the functions of cell membrane and movement across membranes?
(10 + 10 = 20 Marks)
SECTION – IV
Q. No. 7:
Write a detailed note on euploidy.
(20 Marks)
Q. No. 8:
Differentiate between the following:
a) Back cross and test cross
b) Replication and transcription
c) Exons and introns
d) Induced and spontaneous mutation
e) Transduction and transformation
(5 × 4 = 20 Marks)
SECTION – V
Q. No. 9:
Write short notes on any TWO of the following:
a) Hardy-Weinberg’s Law
b) Evidences of Evolution
c) Theory of Natural Selection
(10 + 10 = 20 Marks)
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