NEET UG 2021 · Botany · Question 104
NEET 2021 Botany, question 104
Question 104 of the NEET 2021 paper (code O1) is a Botany question from Plant Growth and Development. Its idea, Synthetic Auxins and Weed Control, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q104 · Botany
The plant hormone used to destroy weeds in a field is :
- 12, 4-DOfficial answer
- 2IBA
- 3IAA
- 4NAA
Official answer: option 1 · NTA final answer key
Same idea
The only question on Synthetic Auxins and Weed Control
No other NEET paper from 2017–2026 tested this exact idea.
Synthetic Auxins and Weed Control: every question and how it was framed
The chapter
Plant Growth and Development in ten years of NEET
23 questions from 2017–2026, asked in 9 of 10 papers, about 2.2 a paper. Plant Growth Regulators alone had 15.