CSS Botany 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

   Describe briefly habitat, structure, reproduction and life cycle of adiantum.

2. Q. 320 marks

   Discuss evolution of seed and its importance in vascular plants.

3. Q. 420 marks

   Why is Darwin’s theory of evolution still so controversial? Explain.

4. Q. 520 marks

   How does the C4 pathway differ from C3 pathway of carbon fixation? What are the advantages and disadvantage of each pathway?

5. Q. 620 marks

   How did the discovery that the DNA molecule is helical with uniform 2-mm diameter lead Watson and crick to propose the pairing rules for double-helix model? Explain.

6. Q. 720 marks

   Describe causes and reclamation of soil salinity and water logging in Pakistan.

7. Q. 820 marks

   Writer short notes on any FOUR of the following: (5 each) (a) Forensic Palynology. (b) Chemo taxonomy. (c) Imperfect Fungi. (d) Choromosomal aberrations. (e) Economic importance of Acacia Family.

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.