Question

Zeatin is an example of

• A. auxins
• B. abscisic acid
• C. Cytokinin
• D. ethylene

Answer 1

The correct option is C

Cytokinin

The correct answer is option C.

Explanation for correct option-

1. Zeatin is the first natural cytokinin to be known.
2. Cytokinins induce cell division and flowering.
3. It increases the resistance to diseases and extreme temperature conditions.
4. Cytokinin also aids in the prevention of senescence in leaves, vegetables, and fruits.

Explanation for incorrect options-

Option A:

1. Auxins are growth regulators.
2. Auxins promote cell elongation and fruit growth.
3. Auxin is used to induce parthenocarpy in plants.

Option B:

1. Abscisic acid is a growth inhibitor and causes abscission in flowers and fruits.
2. Abscisic acid is also termed a stress hormone.

Option D:

1. Ethylene is a gaseous plant hormone that facilitates transverse growth and food ripening.
2. Ethylene overcomes the dormancy of different plant organs.

Final Answer: Zeatin is an example of cytokinins.