Question

Which of the following are plant hormones?

1. Auxin
2. Gibberellins
3. Cytokinins
4. Abscisic Acid

1. 1 & 2
2.

2 & 3

3. Only 3
4. All the above

Answer 1

Correct Answer - Option 4 : All the above

The correct answer is All the Above.

•  Hormones are regulatory substances produced in an organism.
•  Different plant hormones help to coordinate growth, development, and responses to the environment.
•  Auxin hormone - It synthesizes at the shoot tip of the plant and helps the cells to grow longer.
•  Gibberellins hormone - It helps in the growth of the stem.
•  Cytokinin hormone - It promotes cell division.
•  Auxin, Gibberellins, and Cytokinins are examples of Plant growth hormones.
•  Abscisic acid - It is a type of hormone which signals to stop growth.

 

•  Ethylene Hormone- This hormone is a critical regulator of plant growth and development. It is best known for its effect on fruit ripening and organ abscission.