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GATE 2024 BT – Question 45

Plant, Animal and Microbial Biotechnology · Plants: Hairy root culture, artificial seeds, somaclonal variation, protoplast fusion, transgenic plants, marker genes, plastid transformation · 2 marks · Multiple select

Which of the following plant-based secondary metabolites belong(s) to the class of alkaloids?

  1. Ajmalicine (C21H24N2O3)
  2. Azadirachtin (C35H44O16)
  3. Camptothecin (C20H16N2O4)
  4. Vinblastine (C46H58N4O9)

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Correct answer: (A) Ajmalicine (C21H24N2O3); (C) Camptothecin (C20H16N2O4); (D) Vinblastine (C46H58N4O9)

Explanation

Ajmalicine, camptothecin and vinblastine are nitrogen-containing alkaloids. Azadirachtin has no nitrogen and is a limonoid (terpenoid).