Identify the incorrect pair
- Drugs - Ricin
- Alkaloids - Codeine
- Toxin - Abrin
- Lectins - Concanavalin A
Answer
(1) Drugs - Ricin
Solution
As per NCERT (table of secondary metabolites):
Toxins – Abrin, Ricin
Alkaloids – Morphine, Codeine
Lectins – Concanavalin A
Drugs – Vinblastin, Curcumin
∵ Ricin is a toxin, not a drug, the pair "Drugs - Ricin" is incorrect.
Answer: (1)