Match the following concerning the activity/function and the phytohormone involved. Column-IColumn-IIA.Fruit ripener(i)Abscisic acidB.Herbicide(ii)GA3C.Bolting agent(iii)2, 4-DD.Stress hormone(iv)Ethephon Select the correct option from following:

Match the following concerning the activity/function and th…

Biology Plant Growth and Development Previous Year Questions Single Correct MCQ

Published on: August 21, 2026

Match the following concerning the activity/function and the phytohormone involved.

Column-I	Column-II
A.	Fruit ripener	(i)	Abscisic acid
B.	Herbicide	(ii)	GA3
C.	Bolting agent	(iii)	2, 4-D
D.	Stress hormone	(iv)	Ethephon

Select the correct option from following:

A-(iii), B-(iv), C-(ii), D-(i)

A-(iv), B-(iii), C-(ii), D-(i)

A-(iv), B-(ii), C-(i), D-(iii)

A-(ii), B-(iii), C-(iv), D-(i)

Text Solution

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The correct answer is:

Ethylene is highly effective in fruit ripening. Auxins are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. Gibberellins promotes bolting (internode elongation just prior to flowering) in beet, cabbages and many plants with rosette habit. ABA stimulates the closure of stomata in the epidermis and increases the tolerance of plants to various kinds of stresses. Therefore, it is also called the stress hormone.

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