CSS Zoology Past Paper 2017

Instructions specific to this paper

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

Questions

1. Q. 220 marks

   How has the role of forests been identified in mitigating climate change? What are the various mechanisms designed in this regard? Also describe various controversies attached to these mechanisms?

2. Q. 320 marks

   How the ecology of Arthropod vectors and their breeding habitats may be manipulated at different levels to introduce novel strategies for integrated pest management?

3. Q. 420 marks

   How members of Hemichordata are different from Chordates? Highlight Phylogenetic significance of different classes of Hemichordata.

4. Q. 520 marks

   Explain in detail the digestion of carbohydrates and fats in various segments of the gastrointestinal tract in simple stomach animals.

5. Q. 620 marks

   One of the important functions of the hypothalamus is to link the nervous system to the endocrine system via the pituitary gland (hypophysis). Enlist the releasing factors/hormones of hypothalamus and explain their effects on target cells/tissue/glands.

6. Q. 720 marks

   Describe the synthesis, transport and functions of thyroid hormones. How the secretion of thyroid hormones is regulated in hyper-and-hypo thyrodism?

7. Q. 820 marks

   Write short notes on any FOUR of the following: (5 each) (a) Control of nematode parasites (b) Neo-Darwinian theory (c) Adaptability pattern of mammals (d) Advantages and disadvantages of allosteric regulation versus covalent modification (e) Concept of second messenger in hormone action (f) Adaptation of fishes in cold and hot water

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.