NEET UG 2018 · Botany · Question 91
NEET 2018 Botany, question 91
Question 91 of the NEET 2018 paper (code AA) is a Botany question from Biological Classification. Its idea, Anoxygenic Photosynthetic Bacteria, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 3.
Updated 2026-10-08
Q91 · Botany
Oxygen is not produced during photosynthesis by
- 1Cycas
- 2Nostoc
- 3Green sulphur bacteriaOfficial answer
- 4Chara
Official answer: option 3 · CBSE official answer key
Same idea
The only question on Anoxygenic Photosynthetic Bacteria
No other NEET paper from 2017–2026 tested this exact idea.
Anoxygenic Photosynthetic Bacteria: every question and how it was framed
The chapter
Biological Classification in ten years of NEET
26 questions from 2017–2026, asked in 9 of 10 papers, about 2.5 a paper. Kingdom Monera alone had 10.