Question

The pre-harvest fruit drop is due to the

• A. decrease in the level of ABA
• B. decrease in the level of auxin
• C. increase in the level of auxin
• D. decrease in the level of gibberellin

Answer 1

The correct option is B decrease in the level of auxin

Auxin is a plant growth hormone. It prevents the abscission of leaves and fruits at early stage which leads to premature leaf fall and pre-harvest fruit drop. So, decrease in the level of auxin causes pre-harvest fruit drop.