CSS Botany Past Paper 2022
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2 Explain different types of algae based on cell structure, nature of the pigments, and the types of reserve food materials.
Q. No. 3 Discuss the economic importance and distribution of gymnosperms in Pakistan.
Q. No. 4 Describe the pollination mechanisms in angiosperms.
Q. No. 5 Shed light on the important rules of botanical nomenclature.
Q. No. 6 Explain the role of different plant hormones from seed germination to fruit ripening.
Q. No. 7 What are the adverse effects and control measures of aquatic and terrestrial pollution? Explain.
Q. No. 8 Write notes on any TWO of the following:
(a) Causes and mechanism of cell senescence
(b) Importance of genetic engineering
(c) Divergent Evolution