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Abscisic Acid

Which of thes...

Question

Which of these hormones stimulate the closure of stomata in epidermis of a leaf?

A

Ethylene

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B

Auxin

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C

Abscissic acid

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D

Cytokinin

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Solution

The correct option is C
Abscissic acid

Abscissic acid (ABA) stimulates closure of stomata in the epidermal tissue of the leaves. It imparts plants with tolerance to withstand various stresses. ABA, in general, inhibits plant metabolism and growth.

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Similar questions

Q. State whether the following statements are true or false.
Plant growth is stimulated by the presence of auxins, ethylene, and abscisic acid.

Q. One hormone helps in ripening of fruits while the other stimulates closure of stomata. These are respectively ..................

Q. Match and choose the correct option.

	List I		List II
1	Human urine	a	Cytokinin
2	Gibberella fujikuroi	b	Auxin
3	Herring fish DNA	c	Ethylene
4	Ripening fruits	d	Abscisic acid
5	Closing of stomata	e	Gibberellins

Q. Match the columns and select the correct option.

	Hormones		Functions
A.	Cytokinin	I.	Senescence
B.	Ethylene	II.	Abscission
C.	Abscisic acid	III.	Cell growth
D.	Auxin	IV.	Shoot and root formation

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 _____________.

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