Paper of Botany Subjective-2017 CSS Exams 2017

Past Papers of CSS Exams 2017, This forum of CSS Past papers consists of all past papers of CSS exams held in the Year 2017.
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Rashid
Posts: 150
Joined: Sun Jun 26, 2016 12:59 pm

Paper of Botany Subjective-2017 CSS Exams 2017

Post by Rashid » Sat May 05, 2018 10:05 am

CSS Past Paper of Botany Subjective-2017 CSS Exams 2017,
Q. No. 2. Describe briefly habitat, structure, reproduction and life cycle of adiantum. (20)

Q. No. 3. Discuss evolution of seed and its importance in vascular plants. (20)

Q. No. 4. Why is Darwin’s theory of evolution still so controversial? Explain. (20)

Q. No. 5. How does the C4 pathway differ from C3 pathway of carbon fixation? What are the
advantages and disadvantage of each pathway? (20)

Q. No. 6. 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.(20)

Q. No. 7. Describe causes and reclamation of soil salinity and water logging in Pakistan. (20)

Q. No. 8. 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

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