Question

Identify the correct sentences regarding the role of physiological responses of phytohormones:
I. Ethylene initiates sprouting of potato tubers
II. Gibberellins promote senescence
III. Auxins promote flowering in pineapple
IV, Abscisic acid inhibits seed germination

• A. II, III, and IV
• B. I, III, and IV
• C. I, II, and IV
• D. I, II, and III

Hint:

Phytohormones regulate plant growth and development. - Auxins → Promote cell elongation \& flowering in pineapple.
- Gibberellins → Stimulate seed germination (not senescence).
- Abscisic acid → Inhibits seed germination (stress hormone).

Answer 1

The Correct Option is B

Step 1: Understanding the Role of Phytohormones - Ethylene initiates sprouting of potato tubers.
- Gibberellins promote seed germination, not senescence.
- Auxins promote flowering in pineapple.
- Abscisic acid (ABA) inhibits seed germination. Step 2: Identifying the Correct Statement The correct statements are I, III, and IV.