Economic Botany and Biotechnology DSC-16: Chemistry- 6 — DU B. Sc. Life Science (Botany) Previous Year Question Papers

3. Draw diagrams wherever required. Q1. (A) Define the following terms (any five) a. Totipotency b. Molecular Marker c. Shuttle vectors d. PCR e. Nuclease f. Edible vaccine (B) Mention the scientific name, common name, family, economically important plant part of 1x5=5 the following (any live) a. A spice b. A fibre yielding plant c. A beverage d. A Millet e. An oil yielding crop f. A pulse (C) Fill in the blanks (any five) 1x5-5 a. The enzyme used to join two DNA fragments is b. SDS PAGE separates proteins on the basis of . d. The primary centre of origin for Oryza sativa is e. The technique used to introduce DNA into cells using : high-voltage electric current is...... f. The positively geotropic stipe in the groundnut is referred to as Q 2. A. Explain the ecological and economic importance of legumes. 5 Marks B. Explain the mechanism of T-DNA transfer from Agrobacterium to plant genome with the help of suitable diagrams? 5 Marks C. Give detailed account of processing of cotton. 5 Marks Q. 3. A. Draw well labelled diagrams of the following (any three) 3 × 3=9 a. L.S. of clove bud b. T.S. of peppercorn c. pUC 18 d. L.S of wheat caryopsis B. What is Androgenesis? Write the steps of androgenesis to obtain plantlets and its relevance in tissue culture. 6 Marks Q 4. Differentiate between (any three) 5x3 = 15 a. Fatty oils and Essential oils b. Green tea and Black tea c. Southern and Western blotting d. RAPD and RFLP Q S. A. How the development of Bt Cotton has impacted agriculture? Highlight its applications and challenges in plant biotechnology. B. Enumerate DNA fingerprinting. Briefly mention the applications of the technique. C. Discuss the role of millets in combating malnutrition and lifestyle diseases. 5 Marks O 6. Write short notes on (any three) 5x3 = 15 KALINDI COLLEGE LIBRA. Y