NEET 2010 · Class 11

Plant Growth and Development

Root development is promoted by

  1. (A)abscisic acid
  2. (B)auxin
  3. (C)gibberellin
  4. (D)ethylene

The NCERT line that answers it

Verbatim line

They help to initiate rooting in stem cuttings, an application widely used for plant propagation.

Chapter
Plant Growth and Development
Section
13.4.3 Physiological Effects of Plant Growth Regulators
Page
9
Words matched
15 of 15

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 auxins 'help to initiate rooting in stem cuttings,' which conclusively demonstrates that auxin promotes root development, matching the MCQ's correct answer.

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