The plant hormone which triggers the fall of mature leaves and fruits from the plant body is :
(a) auxin
(b) gibberellin
(c) abscisic acid
(d) cytokinin

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Solution

(c) abscisic acid

Abscisic acid causes abscission, i.e., falling of leaves and fruits from the plant body.

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Question 20
The substance that triggers the fall of mature leaves and fruits from plants is

(a) auxin
(b) gibberellin
(c) abscisic acid
(d) cytokinin

Q. The plant hormone which triggers the fall of mature leaves and fruits from the plant body is _________.

Q. What are the exact functions of the plant hormones(Auxin,Cytokinins,Gibberellins,Abscisic acid)?

Q. Read the following statements:-
(a) Auxins are group of plant hormones synthesized at the shot-tip of the plant.
(b) Gibberellins stimulate stem elongation.
(c) Cytokinins delay the ageing in leaves.
(d) Abscisic acid is a growth inhibitor.
Correct statements are _____________.

Question 12
Which of the following is not associated with growth of plants?

(a) Auxin
(b) Gibberellins
(c) Cytokinins
(d) Abscisic acid

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The plant hormone which triggers the fall of mature leaves and fruits from the plant body is : (a) auxin (b) gibberellin (c) abscisic acid (d) cytokinin

(c) abscisic acidAbscisic acid causes abscission, i.e., falling of leaves and fruits from the plant body.

The plant hormone which triggers the fall of mature leaves and fruits from the plant body is :
(a) auxin
(b) gibberellin
(c) abscisic acid
(d) cytokinin

(c) abscisic acid

Abscisic acid causes abscission, i.e., falling of leaves and fruits from the plant body.