Tag: CSIR NET Life Science Previous Year Questions and Solution SECONDARY METABOLITES

Several plants produce metabolites with important medicinal properties and have been extensively used in traditional medicine across the world. Many of these compounds can now be purified or synthesized and […]

26. The plant species which produces both oil and dye (1) Sesamum indicum (2) Conovalia glodicosa (3)Carthamus tinctorius (4) Riccinus cumminis Correct answer: (3) Carthamus tinctorius Explanation: (1) Sesamum indicum (sesame) is […]

25. The main alkaloid obtained for Dioscoreo deltoids is (1) Diosgenin         (2) Atropine (3) Quinone           (4) Serpentine Correct answer: (1) Diosgenin Explanation: The main bioactive compound […]

Which anti-cancerous drug is obtained from Catharanthus roseus (1) Taxol                   (2) Vincristine (3) Colchicine         (4) Serpentine Correct answer: (2) Vincristine Explanation: Vincristine is […]

23. The anti-cancerous drug vincristine is obtained frorn- (1) Catharanthus     (2) Taxus (3) Aribidposis        (4) Cochicum Correct answer: (1) Catharanthus Explanation: Vincristine is a vinca alkaloid, an anti-cancer drug obtained from […]

22. Reserpine, a drug used for treating mental disorders and high blood pressure, is extracted from the roots of which of the following plant species? (1) Ferulo        […]

21.Spermidine represents which of the following group of compounds. (1) jasmonic acid     (2) polyamine (3) auxin                (4) strigolactone Correct answer: (2) polyamine Explanation: Spermidine is a naturally occurring organic compound […]

20. Which of the following is a mismatch between the plant drug and its source? (1) Codeine – Papaver Somniferum (2) Vinblastine – Catharanthus roseus (3) Quinine – Cinchona lefgeriana […]

19. Which one of the following pairs of precursor amino acid and alkaloid is correct? (1) ‘Ornithine  aspartate – nicotine’ and ‘tryptophan – quinine’. (2) ‘Ornithine – nicotine’ and ‘ […]

Dirigent proteins predominantly play an important role in biosynthesis of: (1) lignans                   (2) alkaloids (3) Terpenoids         (4) amino acids Correct answer: (1) lignans Explanation: Dirigent proteins play a crucial role […]