Question

Wilting of leaves is due to which phytohormone?

• A. Ethylene
• B. Abscisic acid
• C. Cytokinin
• D. Auxin

Hint:

Abscisic acid causes stomatal closure to prevent water loss, leading to leaf wilting under drought conditions.

Answer 1

The Correct Option is B

Step 1: Understanding the function of abscisic acid. Abscisic acid is known as the stress hormone in plants. It induces leaf wilting and helps plants conserve water by closing stomata.
Step 2: Explanation of incorrect options.
- Ethylene regulates fruit ripening.
- Cytokinin promotes cell division.
- Auxin is involved in cell elongation and growth.