Question

Which of the following secondary metabolites are wrongly matched with their categories?
A. Toxin - Ricin
B. Drug - Curcumin
C. Alkaloid - Codeine
D. Lectin - Abrin

• A. Only A
• B. A and B both
• C. A and C both
• D. Only D

Answer 1

Answer: (D)

List of secondary metabolites:
Toxins - abrin, ricin
Alkaloids - morphine, codeine
Drugs - vinblastine, curcumin
Lectin - concanavalin A
Abrin is a toxin, not a lectin. Lectins are a class of proteins mostly of plant origin which bind to specific sugars and cause agglutination. One such example is concanavalin A.