CSS Zoology Past Paper 2022

Instructions specific to this paper

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

Questions

1. Q. 220 marks

   Explain in detail the most primitive metazoans and their evolution.

2. Q. 320 marks

   Write in detail the microscopic structure, skeleton, histology and sexual reproduction & development of Sycon gelatinosum.

3. Q. 420 marks

   What are the general features of nematodes including physiology, prevalence and economic importance?

4. Q. 520 marks

   How genetic equilibrium is upset. Explain.

5. Q. 620 marks

   Discuss in detail taxonomic characters and phylogenetic reconstruction.

6. Q. 720 marks

   Describe mechanism of hormone actions.

7. Q. 820 marks

   Write in detail on extinction and biodiversity.

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.