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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 […]

17 Phenylalanine, a precursor of most of the phenolics in higher plants is a product of which one of the following pathways? (1) Shikimic acid pathway (2) Malonic acid pathway […]

16. Which of the following is produced in phenyl propanoid pathway? (1) Phenolics      (2) Carotenes (3) Alkaloids                (4) Terpenes Correct answer: (1) Phenolics Explanation: The phenylpropanoid pathway leads to the production […]