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
(4) Digitalin – Artemisia annua
Correct answer: (4) Digitalin – Artemisia annua
Explanation:
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(1) Codeine is an opiate alkaloid derived from Papaver somniferum (opium poppy). Correct match.
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(2) Vinblastine is a vinca alkaloid isolated from Catharanthus roseus (Madagascar periwinkle). Correct match.
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(3) Quinine is an antimalarial alkaloid extracted from Cinchona species, including Cinchona ledgeriana (correct spelling). Correct match; the spelling “lefgeriana” seems a typographical error.
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(4) Digitalin (or digitoxin) is a cardiac glycoside obtained from Digitalis purpurea (foxglove), not from Artemisia annua. Artemisia annua is known for producing artemisinin, an antimalarial drug, making this a mismatch.
Option-wise:
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(1) Codeine – Papaver Somniferum: correct.
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(2) Vinblastine – Catharanthus roseus: correct.
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(3) Quinine – Cinchona ledgeriana: correct (name slightly misspelled).
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(4) Digitalin – Artemisia annua: mismatch; digitalin is from Digitalis purpurea.
Among common plant-derived drugs, digitalin is sourced from Digitalis purpurea, not Artemisia annua (which produces artemisinin), while codeine, vinblastine, and quinine correctly match their plant origins, emphasizing accurate botanical drug sourcing.
