Q. No. 2. Explain different types of algae based on cell structure, nature of the pigments and the types of reserve food materials. (20)

 

Q. No. 3. Discuss the economic importance and distribution of gymnosperms in Pakistan. (20)

 

Q. No. 4. Describe the pollination mechanisms in angiosperms. (20)

 

Q. No. 5. Shed light on the important rules of botanical nomenclature. (20)

 

Q. No. 6. Explain the role of different plant hormones from seed germination to fruit ripening. (20)

 

Q. No. 7. What are the adverse effects and control measures of aquatic and terrestrial pollution? Explain. (20)

 

Q. No. 8. Write notes on any TWO of the followings: (10 each) (20)
(a) Causes and mechanism of cell senescence
(b) Importance of genetic engineering
(c) Divergent Evolution

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