CSS past papers · 2017
CSS 2017 Botany Past Paper
Download and review the CSS 2017 Botany Past Paper on CSS Vista, with archive details, related papers and a direct PDF link for examination preparation.
Paper details
- Examination
- CSS
- Year
- 2017
- Subject
- Botany
- Paper
- Single Paper
- Subject type
- Optional
- Mode
- Subjective
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Questions recorded from this paper
These 7 question wordings are transcribed from CSS Vista’s structured Botany past-paper record for CSS 2017.
- Q2 · ReproductionDescribe briefly habitat, structure, reproduction and life cycle of adiantum. (20)
- Q5 · CO2 fixationHow does the C4 pathway differ from C3 pathway of carbon fixation? What are the (20) advantages and disadvantage of each pathway?
- Q7 · Causes and reclamation of soil salinity and water logging in PakistanDescribe causes and reclamation of soil salinity and water logging in Pakistan. (20)
- Q8 · Chromosomal aberrationsWriter short notes on any FOUR of the following: (5 each) (20) (a) Forensic Palynology. (b) Chemo taxonomy. (c) Imperfect Fungi. (d) Choromosomal aberrations. (e) Economic importance of Acacia Family.
- Q3 · EvolutionDiscuss evolution of seed and its importance in vascular plants. (20)
- Q4 · EvolutionWhy is Darwin’s theory of evolution still so controversial? Explain. (20)
- Q6 · Molecular BiologyHow did the discovery that the DNA molecule is helical with uniform 2-mm diameter (20) lead Watson and crick to propose the pairing rules for double-helix model? Explain.