Question

Which of the following is a plant hormone?

• A. Testosterone
• B. Cytokinin
• C. Adrenaline
• D. Thyroxin

Hint:

Cytokinins stimulate cell division, shoot growth, and delay aging in plants.

Answer 1

The Correct Option is B

Cytokinins are plant hormones that promote cell division (cytokinesis), growth, and development. They help in delaying leaf senescence (aging) and work in coordination with auxins to regulate plant growth.
Other hormones listed:
- Testosterone (A) → Male sex hormone in animals.
- Adrenaline (C) → A stress hormone in animals.
- Thyroxin (D) → A hormone regulating metabolism in animals.