NEET UG 2021 · Zoology · Question 158
NEET 2021 Zoology, question 158
Question 158 of the NEET 2021 paper (code O1) is a Zoology question from Biomolecules. Its idea, Secondary Metabolites: Toxins and Lectins, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q158 · Zoology
Identify the incorrect pair.
- 1Lectins - Concanavalin A
- 2Drugs - RicinOfficial answer
- 3Alkaloids - Codeine
- 4Toxin - Abrin
Official answer: option 2 · NTA final answer key
Same idea
The only question on Secondary Metabolites: Toxins and Lectins
No other NEET paper from 2017–2026 tested this exact idea.
Secondary Metabolites: Toxins and Lectins: every question and how it was framed
The chapter
Biomolecules in ten years of NEET
33 questions from 2017–2026, asked in 10 of 10 papers, about 3.1 a paper. Biomolecule Structure alone had 33.