Which of the following is not a function of gibberellic acid?

Options

A. Bolting
B. Delayed senescence
C. Seed germination
D. Ripening

Answer

To determine which of the following is not a function of gibberellic acid (GA), we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand Gibberellic Acid (GA)**: Gibberellic acid is a plant growth regulator that plays several roles in plant development. It is known for promoting growth and influencing various physiological processes.

2. **Evaluate Each Option**:
- **Option 1: Bolting**: Gibberellic acid is known to promote bolting, which is the rapid elongation of the stem before flowering. This is a recognized function of GA.

- **Option 2: Delayed Senescence**: Gibberellic acid also has the ability to delay senescence (aging) in plants, allowing them to remain functional for a longer period. This is another function of GA.

- **Option 3: Seed Germination**: GA is crucial in breaking seed dormancy and promoting germination. This is a well-established role of gibberellic acid.

- **Option 4: Ripening**: The primary hormone responsible for fruit ripening is ethylene. Gibberellic acid does not play a significant role in the ripening process of fruits.

3. **Conclusion**: Based on the analysis, the function that is not associated with gibberellic acid is **ripening**. Therefore, the correct answer is **Option 4: Ripening**.

### Final Answer:
The function that is not associated with gibberellic acid is **ripening**.

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