NEET 2002 · Class 11

Respiration in Plants

During the formation of bread it becomes porous due to release of CO2 by the action of

  1. (A)yeast
  2. (B)bacteria
  3. (C)virus
  4. (D)protozoans

The NCERT line that answers it

Verbatim line

In fermentation, say by yeast, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions where pyruvic acid is converted to $\text{CO}_2$ and ethanol.

Chapter
Respiration in Plants
Section
12.3 FERMENTATION
Page
4
Words matched
25 of 28

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

How this line gives the answer

0, emb=0.7741, combined=0.8644). Verified: high — The span explicitly states that yeast converts pyruvic acid to CO2 during fermentation, which directly answers the question about bread becoming porous due to CO2 release.

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Question text is reproduced from the published NEET 2002 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.