Fruit and leaf drop at early stages can be prevented by the application of

Which of the following inhibits leaf abscission?

Select an appropriate plant hormone responsible for apical dominance from the following.

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

Which phytohormone promotes falling of old leaves whereas inhibits falling of young leaves?

Which of the following is responsible for apical dominance?