Assertion : Auxins help to prevent fruits and leaves droo at early stages.
Reason : Auxins promote the abscission of older mature leaves and fruits.

Options

A. Assertion is correct, reason is correct, reason is a correct explanation for assertion.
B. Assertion is correct, reason is correct, reason is not a correct explanation for assertion
C. Assertion is correct, reason is incorrect
D. Assertion is incorrect, reason is correct.

Answer

B

Explanation

Auxin delays abscission of young leaves and fruits. Its effect is through nonformation 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.