Read the assertion and reason carefully to mark the correct option in question.

Assertion: Ethylene helps the plants to increase their absorption surface.

Reason: Ethylene promotes root growth and root hair formation.

If both assertion and reason are true and the reason is the correct explanation of the assertion.

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If both assertion and reason are false.

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If assertion is true but the reason is false.

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If both assertion and reason are true but the reason is not the correct explanation of the assertion.

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Solution

The correct option is A If both assertion and reason are true and the reason is the correct explanation of the assertion.
Assertion-Reason relation
Plant growth regulators are organic compounds responsible for signalling, control and regulation of plant growth. Plant growth regulators can be divided into the following two categories:

$∙$ Growth promoting regulators
$∙$ Growth inhibiting regulators

Ethylene functions as both growth promoting as well as growth inhibiting regulator as per its concentration.

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Similar questions

Assertion (A): Ethylene increases the yield of cucumbers

Reason(R): Ethylene promotes female flowers in cucumber

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