NEET 1992 · Class 11

Biological Classification

Organisms which are indicator of SO2 pollution of air

  1. (A)mosses
  2. (B)lichens
  3. (C)mushrooms
  4. (D)puffballs

The NCERT line that answers it

Verbatim line

Lichens are very good pollution indicators – they do not grow in polluted areas.

Chapter
Biological Classification
Section
2.6 VIRUSES, VIROIDS, PRIONS AND LICHENS
Page
11
Words matched
12 of 13

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=0.8402, combined=0.9041). Verified: high — The span explicitly states 'Lichens are very good pollution indicators' and specifically mentions they 'do not grow in polluted areas,' which directly answers the MCQ about organisms indicating SO2 pollution.

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Question text is reproduced from the published NEET 1992 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.