Question

Which of the following prevents the fall of fruits?

• (A) GA3
• (B) NAA
• (C) Ethylene
• (D) Zeatin

Answer 1

The Correct Option is B

Explanation:
NAA (Naphthalene acetic acid) is a synthetic auxin. It is produced artificially. It inhibits abscission. It prevents the formation of a layer called the abscission layer which is formed between the organs like fruits, flowers, etc. and the stem. It is a layer of dead cells that causes fruit fall. As NAA prevents the formation of this layer, so it prevents the fall of fruits. Hence, the correct option is (B).