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Botany · Plant Growth and Development

NEET (UG) 2023 — Question 184

Which hormone promotes internode/petiole elongation in deep water rice?

  1. Option A:

    Kinetin

  2. Option B:

    Ethylene

    Correct
  3. Option C:

    2, 4-D

  4. Option D:

    GA3GA_3

Answer: B

Step-by-step solution

Ethylene is a gaseous plant hormone that promotes rapid internode and petiole elongation in deep-water rice plants.

This specific growth response helps the leaves and upper parts of the plant remain above the water level for survival during flooding.

Answer key and solution verified before publishing.

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Exam
NEET (UG) 2023
Paper
2023 paper
Subject
Botany
Chapter
Plant Growth and Development
Topic
Gibberelin

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