CSS Zoology Past Paper 2018

Instructions specific to this paper

• Attempt ONLY FOUR questions from PART-II. ALL questions carry EQUAL marks.

Part-II questions

1. Q. 220 marks

   Discuss in detail how do the marine and terrestrial animals meet the problems of salt and water balance?

2. Q. 320 marks

   Differentiate between endocrine and exocrine glands. Through how many kinds of receptors do the hormones act and how is the secretion rate controlled?

3. Q. 420 marks

   Arthropod exoskeleton is the most complex of invertebrate integuments. Describe its structure and explain the difference in the way the cuticle is hardened in Crustaceans and in insects.

4. Q. 520 marks

   Members of such a large and diverse phylum as mollusca impact humans in many ways. Discuss. Also name classes of the phylum with two differential characters for each.

5. Q. 620 marks

   (a) Discuss parasitic adaptation and medical importance with respect to nematodes. (b) Write note on structural and functional adaptation in mammals.

6. Q. 720 marks

   Metamerism profoundly influences virtually every aspect of annelid structure and function, such as the anatomical arrangement of organs that are coincidentally with Metamerism. Discuss through logical reasoning.

7. Q. 820 marks

   Write short notes on any FOUR of the following: (05 each) (a) Gas exchange in reptiles (b) Carbohydrates: Nature’s Most Abundant Organic Substance (c) Mendel’s Law of inheritance (d) Food chain (e) Social Behaviour and its impact on individuals (f) Composition of blood

Source & accuracy

Source:

The question paper is issued by the Federal Public Service Commission (FPSC) for the CSS competitive examination. The paper itself is unaltered; the PDF here has an EduReach Academy cover page added.

How this text was produced:

Question text is extracted automatically from the PDF and is not a re-typed transcript. Part-I (the MCQ block answered on the OMR sheet) is not reproduced; what appears here is the Part-II descriptive paper. Where a paper is image-only or its text layer does not preserve reading order, no text is shown and the original PDF is offered instead.

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Standard FPSC instructions

Printed on this and every CSS paper.

• Part-II is to be attempted on the separate Answer Book.
• All the parts (if any) of each question must be attempted at one place instead of at different places.
• Write Q. No. in the Answer Book in accordance with Q. No. in the question paper.
• No page/space be left blank between the answers. All the blank pages of the Answer Book must be crossed.
• Extra attempt of any question or any part of the attempted question will not be considered.