A hormone X helps in the ripening of fruits, while Y promotes abscission of fruits. Z can induce parthenocarpy. Identify X, Y and Z correctly.

X- ABA, Y- Auxin, Z- Ethylene

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X- Auxin, Y- Gibberellin, Z- Ethylene

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X- Auxin, Y- Ethylene, Z-ABA

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X- Ethylene, Y- ABA, Z- Gibberellin

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Solution

The correct option is D X- Ethylene, Y- ABA, Z- Gibberellin
$∙$ The hormone which helps in ripening of fruits is ethylene.
$∙$ Abscisic acid (ABA) is a plant growth inhibitor. It promotes abscission of fruits and flowers.
$∙$ Gibberellin can induce parthenocarpy or development of seedless fruits from unfertilised pistils.

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Similar questions

Identify the pair that is correctly matched from the given.

Auxin – cell division
Gibberellin – internodal elongation
Cytokinin – fruit ripening
Ethylene – apical dominance

Q. Match the names of the phytohormones with the roles listed.

	List I		List II
A	Auxin	p	Internodal elongation
B	Gibberellin	q	Cell division
C	Cytokinin	r	Ripening of fruits
D	Ethylene	s	Abscission
		t	Apical dominance

Q. Assertion :Ethylene induces fruit ripening. Reason: Ethylene is a gaseous hormone.

Q. Match the columns and choose the correct combination.

	I		II
(a)	Cytokinin	(p)	Stress hormone
(b)	Auxins	(q)	Ripening of fruits
(c)	Abscisic acid	(r)	Apical dominance
(d)	Ethylene	(s)	Bolting
		(t)	Richmond-Lang Effect

Q. Q. Which of the following pairs is/are correctly paired?

Plant Hormone	Functions
1. Auxin	Helps in the growth of plant tissue.
2. Cytokinin	Promotes cell division, delays aging of cells.
3. Ethylene	Inhibits growth and causes wilting of leaves, promoting dormancy of buds.
4. Gibberellin	This is a gaseous hormone that causes the ripening of fruits

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