NEET 2024 · Class 11

Plant Growth and Development

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

  1. (A)promotes apical dominance.
  2. (B)promotes abscission of mature leaves only.
  3. (C)does not affect mature monocotyledonous plants.
  4. (D)can help in cell division in grasses, to produce growth.

The NCERT line that answers it

Verbatim line

2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants.

Chapter
Plant Growth and Development
Section
13.4.3 Physiological Effects of Plant Growth Regulators
Page
10
Words matched
23 of 23

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

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span directly states that 2,4-D (a synthetic auxin) does not affect mature monocotyledonous plants, which matches option C exactly and distinguishes it from the other options.

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Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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