NEET UG 2019 · Botany · Question 131
NEET 2019 Botany, question 131
Question 131 of the NEET 2019 paper (code P1) is a Botany question from Mineral Nutrition. Its idea, Denitrifying Bacteria, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q131 · Botany
Thiobacillus is a group of bacteria helpful in carrying out :
- 1Nitrogen fixation
- 2Chemoautotrophic fixation
- 3Nitrification
- 4DenitrificationOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
The only question on Denitrifying Bacteria
No other NEET paper from 2017–2026 tested this exact idea.
The chapter
Mineral Nutrition in ten years of NEET
12 questions from 2017–2026, asked in 8 of 10 papers, about 1.1 a paper. Nitrogen Fixation alone had 6.