Assertion: Auxins help to prevent fruit and leaf drop at early stages.

Reason: Auxins promote the abscission of older mature leaves and fruits.

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

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

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If assertion is true but reason is false

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If both assertion and reason are false

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Solution

The correct option is B If both assertion and reason are true but reason is not the correct explanation of assertion
Auxin delays abscission of young leaves and fruits. Its effect is through non-formation of abscission zone below a leaf or fruit. Abscission zone cuts off nutrients and water supply. However, auxin promotes the abscission of mature or older leaves and fruits.

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Similar questions

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

Read the assertion and reason carefully to mark the correct option out of the options given below :

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

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

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

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