Which of the following is not an influence of auxins?

Options

A. Cell elongation
B. Fruit ripening
C. Cell division
D. Inhibit the root growth

Answer

To determine which of the given options is not an influence of auxins, we can analyze each option based on the known functions of auxins in plants.

### Step-by-Step Solution:

1. **Understand Auxins**: Auxins are a type of plant hormone (phytohormone) that play a crucial role in various plant growth processes.

2. **Evaluate Option 1: Cell Elongation**:
- Auxins are known to promote cell elongation, especially in the stems and roots. Therefore, this is an influence of auxins.

3. **Evaluate Option 2: Fruit Ripening**:
- The hormone primarily responsible for fruit ripening is ethylene, not auxins. Thus, this option does not represent an influence of auxins.

4. **Evaluate Option 3: Cell Division**:
- Auxins are involved in promoting cell division, particularly in the meristematic tissues. Hence, this is an influence of auxins.

5. **Evaluate Option 4: Inhibition of Root Growth**:
- Auxins can inhibit root growth when they reach a certain concentration. This is part of their role in apical dominance and lateral growth. Therefore, this is also an influence of auxins.

6. **Conclusion**:
- Since fruit ripening is regulated by ethylene and not auxins, the correct answer to the question is **Option 2: Fruit Ripening**.

### Final Answer:
**Fruit Ripening** is not an influence of auxins.

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