CSS Zoology Past Paper 2005 PDF

Federal Public Service Commission (FPSC)
Competitive Examination for Recruitment to BPS-17 Posts under the Federal Government

 Time Allowed: 3 Hours

 Maximum Marks: 100 Marks

 Paper-I: Zoology 

 PART-II (Subjective) 80 Marks 

Attempt ONLY FOUR Questions from PART-II. (20×4)

 PART-II 

 SECTION-I 

Q. No. 2
(a) Write a brief account of conjugation in Protozoa
(b) “Porifera is a group falling at just above the colonial level of organization.” Comments.
(c) “Corals are distributed over a wider range, yet coral reefs are present in selected areas.” Discuss.
Q. No. 3
(a) “Parasitism leads to development of some characters and withdrawal of some other characters.” Discuss the statement with reference to Platyhelminthes.
(b) Write a brief account of the shell in Mollusca.
(c) “Water Vascular system is the lifeline in Echinodermata.” Comment on the statement.
Q. No. 4
Write short notes on the following:
(a) Metameric segmentation
(b) Respiration in Arthropoda
(c) Enterocoelomates
(d) Pseudocoelomates

 SECTION-II 

Q. No. 5
(a) Discuss retrogressive metamorphosis with reference to Ascidians.
(b) “Amphioxus is an ideal chordate.” Discuss the statement.
Q. No. 6
(a) “The skeleton of Petromyzon is at a very initial stage of development.” Justify the statement.
(b) “The heart gradually evolved into a more efficient pumping organ in different chordate groups.” Explain the statement.
Q. No. 7
(a) Write an essay on migration in birds, with special reference to Pakistan.
(b) Discuss the different types of eggs found in different chordate groups.

 Paper-II: Zoology 

 PART-II (Subjective) 80 Marks 

Attempt ONLY FOUR Questions from PART-II. (20×4)

 PART-II 

Q. No. 2
(a) Discuss the role of light and the transformation of CO₂ in photosynthesis.
(b) Define respiration. What is meant by respiratory quotient?
(c) What is dormancy? Describe methods of breaking dormancy.
Q. No. 3
(a) Define ecology. Describe the applications of ecology in detail.
(b) What is plant succession? Give a detailed account of the process of plant succession starting in a lake.
Q. No. 4
(a) Give an account of methods for reclamation of waterlogged soil.
(b) Write an essay on natural resources of Pakistan.
Q. No. 5
(a) What is soil erosion? What are its causes? How can we control it?
(b) Environmental pollution is the result of urbanization and industrialization. Comment on the statement.
Q. No. 6
Write notes on the following:
(a) Plant hormones
(b) Vernalization and its significance
(c) Food web
(d) Methods of sampling vegetation
Q. No. 7
Describe the structure and functions of the following cell organelles. Draw diagrams where necessary:
(a) Mitochondria
(b) Endoplasmic reticulum
(c) Cell wall
(d) Ribosomes
(e) Golgi bodies
Q. No. 8
(a) What do you know about the theory of natural selection?
(b) What is mutation? Describe its different types.
(c) Give an account of crossing over and polyploidy.

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