What happens when auxin is applied to the tip of a cut stump?

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

Indole-$3$-acetic acid,known as auxin,was first isolated from:

Storage sprouting of potato tubers can be prevented by treatment with low concentrations of

Which of the following effects of auxins on plants is the basis for commercial application?

The number of auxins isolated from Phaseolus vulgaris is