Which of the following is not related to the function of Gibberellins?

Options

A. Increase in length of grapes stalks.
B. Increase in length of the axis.
C. Increase in length of petiole in deep water rice plants.
D. Increase in length of stem in sugarcane

Answer

To determine which of the options is not related to the function of Gibberellins, we can analyze each option based on the known functions of this plant hormone.

### Step-by-Step Solution:

1. **Understanding Gibberellins**: Gibberellins are plant hormones that promote growth and development in plants. They are particularly known for their role in elongating stems and influencing various developmental processes.

2. **Reviewing the Options**:
- **Option 1**: Increase in length of grape stalks.
- **Option 2**: Increase in length of the axis.
- **Option 3**: Increase in length of petiole in deep water rice plants.
- **Option 4**: Increase in length of stem in sugarcane.

3. **Analyzing Each Option**:
- **Option 1**: Gibberellins are known to increase the length of grape stalks, which is a recognized function.
- **Option 2**: Gibberellins also increase the length of the axis, which is another known function.
- **Option 3**: The increase in length of the petiole in deep water rice plants is not a well-documented function of Gibberellins. Instead, this function is more associated with other growth regulators or adaptations in aquatic plants.
- **Option 4**: Gibberellins are known to increase the length of the stem in sugarcane, contributing to higher yields.

4. **Conclusion**: Based on the analysis, **Option 3** (Increase in length of petiole in deep water rice plants) is not related to the function of Gibberellins.

### Final Answer:
The correct option is **Option 3**.

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