FOR RECRUITMENT TO THE POSTS OF
PROVINCIAL MANAGEMENT SERVICE, ETC -2025
SUBJECT: ZOOLOGY (PAPER-II)
TIME ALLOWED: THREE HOURS MAXIMUM MARKS: 100
NOTE:
i. All the parts (if any) of each Question must be attempted at one place instead of at different places.
ii. Write Q. No. in the Answer Book in accordance with Q. No. in the Q. Paper.
iii. 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 question will not be considered.
NOTE: Attempt FIVE Questions in All Selecting ONE from each Section. Attempt in Urdu or English.
SECTION-A
Q. No. 1: a) Write a comparative account on prokaryotic and eukaryotic cells.
b) What is the ‘Power House’ of a cell? How does it generate power?
(10+10=20 Marks)
Q. No. 2: a) Write a detailed account of the enzymatic action modes during metabolic pathways in the body.
b) What is cell division? How does it occur? Write the role of different cell organelles during cell division in detail.
(10+10=20 Marks)
SECTION-B
Q. No. 3: a) Which thermoregulatory mechanisms are used by the ectotherms living in hot environments?
b) Differentiate between fast-twitch and slow-twitch muscle fibers. What is their importance in athletic training?
(10+10=20 Marks)
Q. No. 4: a) What is meant by Basal Metabolic Rate (BMR)? Which factors influence BMR?
b) Explain the physiology and significance of the fight or flight response (also called the alarm response).
(10+10=20 Marks)
SECTION-C
Q. No. 5: a) Briefly describe DNA recombinant technology, its tools, and applications.
b) What are transgenic animals? Justify their role in human life.
(10+10=20 Marks)
Q. No. 6: a) Elaborate on Mendel’s principles of genetics, support the answer with examples.
b) What is genetic engineering? What are the different tools used for it?
(10+10=20 Marks)
SECTION-D
Q. No. 7: a) Describe different steps of the biochemical origin of life.
b) Relate the main points of Charles Darwin’s theory of natural selection to his observations.
(10+10=20 Marks)
Q. No. 8: a) What is a biological species concept? What are its limitations?
b) How has modern synthesis of evolution reconciled the classical Darwinian selection theory with a population-oriented view of Mendelian genetics?
(10+10=20 Marks)
SECTION-E
Q. No. 9: a) How is the disruption of global circulation of nitrogen affecting terrestrial and aquatic ecosystems?
b) What are the different forms of environmental pollution? Which type/s of pollution is/are the most relevant with reference to Pakistan?
(10+10=20 Marks)
Q. No. 10: a) Elaborate on the energy flow, energy pyramid, and biomass pyramid in a terrestrial ecosystem.
b) Discuss the water pollution in the context of riverine water.
(10+10=20 Marks)
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