Botany · Plant Growth and Development

NEET (UG) 2023 — Question 79

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

Option A:
Kinetin
Option B:
Ethylene
Correct
Option C:
2,4-D
Option D:
$\mathrm{GA}_{3}$

Answer: B

Step-by-step solution

Ethylene is a gaseous plant hormone that promotes rapid internode and petiole elongation in deep water rice, allowing the plant to keep its leaves above water. Thus, the correct option is B.

Answer key and solution verified before publishing.

Practise Plant Growth and Development

Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.

Solve a similar one free

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

Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed…
Which hormone promotes internode/petiole elongation in deep water rice?

Answer: B

Step-by-step solution

Practise Plant Growth and Development

More Plant Growth and Development questions from this paper