The substance that triggers the fall of mature leaves and fruits from plants is due to

auxin

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gibberellin

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abscistic acid

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cytokinin

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Solution

The correct option is A abscistic acid
Abscistic acid is a plant hormone which promotes senescence of leaves and causes abscission of flowers and fruits.

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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. X is a plant hormone that promotes the fall of mature leaves and fruits from the plants, while Y is a hormone that regulates protein, carbohydrate, and fat metabolism in the human body. What are X and Y?

The phenomenon of falling of leaves and the fruits from the plant is known as abscission.

Q. Falling of floral parts, leaves ad fruits from the mother plant is called

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The substance that triggers the fall of mature leaves and fruits from plants is due to

The correct option is A abscistic acidAbscistic acid is a plant hormone which promotes senescence of leaves and causes abscission of flowers and fruits.

The correct option is A abscistic acid
Abscistic acid is a plant hormone which promotes senescence of leaves and causes abscission of flowers and fruits.