The plant hormone which is basic in nature?

Options

A. Auxin
B. Gibberellins
C. Cytokinin
D. Abscisic acid

Answer

To determine the plant hormone that is basic in nature, we can analyze the options provided:

1. **Auxin**: The primary auxin is indole-3-acetic acid (IAA), which is known to be acidic in nature.

2. **Gibberellin**: This hormone, derived from the fungus Gibberella, is known as gibberellic acid, which is also acidic.

3. **Cytokinin**: Cytokinins are a class of plant hormones that promote cell division. They were first discovered as kinetin, which is a modified form of adenine. Cytokinins are known to be basic in nature.

4. **Abscisic Acid**: This hormone is involved in various plant processes, including stress responses and is also acidic in nature.

From the analysis above, the only hormone that is basic in nature is **cytokinin**.

### Step-by-Step Solution:
1. **Identify the Hormones**: List the plant hormones mentioned in the question: Auxin, Gibberellin, Cytokinin, and Abscisic Acid.

2. **Determine the Nature of Each Hormone**:
- Auxin (Indole-3-acetic acid) - Acidic
- Gibberellin (Gibberellic acid) - Acidic
- Cytokinin (Kinetin) - Basic
- Abscisic Acid - Acidic

3. **Compare the Nature**: Compare the nature of each hormone to identify which one is basic.

4. **Conclusion**: Based on the analysis, conclude that the plant hormone which is basic in nature is **Cytokinin**.