Identify the incorrect pair
Alkaloids - Codeine
Toxin - Abrin
Lectins - Concanavalin A
Drugs - Ricin
Option (4) is incorrect because ricin is a toxin obtained from Ricinus plant. Vinblastin and curcumin are drugs. Morphine and codeine are alkaloids. Abrin is also a toxin obtained by plant Abrus. Concanavalin A is a lectin.
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