NEET UG 2023 · Botany · Question 142
NEET 2023 Botany, question 142
Question 142 of the NEET 2023 paper (code G6) is a Botany question from Environmental Issues. Its idea, Planktonic Algae in Blooms, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q142 · Botany
Which one of the following statements is NOT correct?
- 1The amount of some toxic substances of industrial waste water increases in the organisms at successive trophic levels.
- 2The micro-organisms involved in biodegradation of organic matter in a sewage polluted water body consume a lot of oxygen causing the death of aquatic organisms.
- 3Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries.Official answer
- 4Water hyacinth grows abundantly in eutrophic water bodies and leads to an imbalance in the ecosystem dynamics of the water body.
Official answer: option 3 · NTA final answer key
Same idea
The only question on Planktonic Algae in Blooms
No other NEET paper from 2017–2026 tested this exact idea.
Planktonic Algae in Blooms: every question and how it was framed
The chapter
Environmental Issues in ten years of NEET
19 questions from 2017–2026, asked in 7 of 10 papers, about 1.8 a paper. Water Pollution alone had 3.