Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:

Options

A. Gibberellic acid
B. Nitrate
C. Ascorbic acid
D. Chilling conditions

Answer

To solve the question, "Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to:", we will analyze each option provided and determine which one does not aid in removing inhibitory substances from dormant seeds.

### Step-by-Step Solution:

1. **Understanding Dormant Seeds**: Dormant seeds are in a state where they do not germinate despite favorable conditions. This dormancy is often due to the presence of inhibitory substances that prevent germination.

2. **Identifying the Options**: The options provided are:
- A) Gibberellic Acid
- B) Nitrates
- C) Ascorbic Acid
- D) Chilling Conditions

3. **Analyzing Option A - Gibberellic Acid**:
- Gibberellic Acid is a plant hormone known to promote growth and break dormancy in seeds. It helps in the removal of inhibitory substances.
- **Conclusion**: This option is incorrect as it does help in removing inhibitory substances.

4. **Analyzing Option B - Nitrates**:
- Nitrates are known to stimulate seed germination and can help in breaking seed dormancy by removing inhibitory substances.
- **Conclusion**: This option is also incorrect as it aids in removing inhibitory substances.

5. **Analyzing Option C - Ascorbic Acid**:
- Ascorbic Acid, also known as Vitamin C, does not have a significant role in breaking seed dormancy or removing inhibitory substances.
- **Conclusion**: This option is correct as it does not help in removing inhibitory substances.

6. **Analyzing Option D - Chilling Conditions**:
- Chilling conditions (cold stratification) can help in breaking dormancy in certain seeds by allowing them to germinate after a period of cold exposure.
- **Conclusion**: This option is incorrect as it helps in removing inhibitory substances.

### Final Answer:
The correct answer is **C) Ascorbic Acid**. Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to Ascorbic Acid.