Plant Resources and Economic Botany — DU B.Sc. (Hons.) Botany Previous Year Question Papers

(b) Jute and Cotton fibre (c) Alcoholic and Non-alcoholic beverages (d) Cereals and Millets 4. Draw a well labelled diagram of followings : (any three) (3×5=15) (a) L.S of Clove floret (b) T.S of Potato Tuber (c) Morphology of Mustard plant (d) L.S of Black pepper (a) Describe the morphology of the rubber plant (Hevea brasiliensis). Explain the process of latex tapping from para rubber tree. (3.5+4=7.5) (b) Write botanical name, family, plant parts used, chemical constituents, economic importance and morphology of tea plant. (1+1+1+1+1.5+2=7.5) (c) Describe the plant morphology, products and by-products of Saccharum officinarum. Describe methods of propagation and harvesting sugarcane crop. (2+2.5+3=7.5) Attempt FOUR questions in all, including Question All parts of a question must be answered together. Draw labelled diagrams and write the botanical name wherever necessary. 1. Answer any five questions from each part. (1×5=5) (a) Give botanical name and family (any 5) : (iii) Pigeon pea (vii) Saffron (b) Fill in the blanks (any 5) : (1×5=5) (i) The main psychoactive compound in Opium (ii) is the chief alkaloid of Foxglove. (iii) Rauwolfia is used for the treatment of (iv) Example of a drug used as a myocardial stimulant. (v) Clove belongs to family in scientific classification is . (vi) The stimulant compound present in Tea is (c) Match the following (any 5) : (i) Nobilization (a) Fibre (ii) Copra (b) Rubber (iv) Hemp (d) Sugarcane (v) Tapping (e) Drug yielding (vi) Favism (f) Coconut 2. Write short notes on the following : (any 3) (i) Economic importance of spices (ii) Centers of Diversity (iii) Fatty oils classification with example (iv) Classification of Fibres based upon their Origin (a) Cinchona and Nicotiana tabacum