Which plant hormone is basic in nature

Options

A. Gibberellin
B. Auxin
C. Ethylene
D. Cytokinin.

Answer

To answer the question "Which plant hormone is basic in nature?", we will analyze the options provided and determine which hormone fits the criteria of being basic.

### Step-by-Step Solution:

1. **Identify the Hormones**: The options given are:
- A) Gibberellin
- B) Auxin
- C) Ethylene
- D) Cytokinin

2. **Analyze Gibberellin**:
- Gibberellin, also known as gibberellic acid, is primarily involved in promoting cell growth and elongation.
- **Nature**: It is acidic in nature due to its name containing "acid".
- **Conclusion**: Not the correct answer.

3. **Analyze Auxin**:
- Auxin is derived from indole acetic acid (IAA) and plays a role in root initiation and parthenocarpy.
- **Nature**: Since it is derived from acetic acid, it is also acidic in nature.
- **Conclusion**: Not the correct answer.

4. **Analyze Ethylene**:
- Ethylene is a gaseous hormone that helps in the ripening of fruits.
- **Nature**: It is considered neutral, neither basic nor acidic.
- **Conclusion**: Not the correct answer.

5. **Analyze Cytokinin**:
- Cytokinin is involved in cell division, particularly in the shoot and root regions, and regulates bud growth.
- **Nature**: It is basic in nature because it contains nitrogenous atoms in its structure.
- **Conclusion**: This is the correct answer.

6. **Final Answer**: The plant hormone that is basic in nature is **Cytokinin**.

### Summary:
- Gibberellin: Acidic
- Auxin: Acidic
- Ethylene: Neutral
- Cytokinin: Basic

Thus, the correct answer is **Cytokinin**.

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