Name 2 hormones that are antagonistic in action.

Answer

### Step-by-Step Solution:

1. **Understanding Antagonistic Hormones**: Antagonistic hormones are those that have opposite effects on plant growth and development. This means that when one hormone is active, the other inhibits its action.

2. **Identifying the Hormones**: Two well-known hormones that exhibit antagonistic actions are Gibberellins and Abscisic Acid (ABA).

3. **Role of Abscisic Acid (ABA)**:
- Abscisic Acid is often referred to as the "stress hormone."
- It is produced in response to stress conditions such as drought or high temperatures.
- Its functions include:
- Inducing dormancy in seeds and buds, which means it helps the plant enter a state of inactivity.
- Promoting the abscission (falling off) of leaves, which helps the plant conserve water during stressful conditions.

4. **Role of Gibberellins**:
- Gibberellins are hormones that promote growth and development in plants.
- Their functions include:
- Stimulating stem elongation, which helps the plant grow taller.
- Promoting seed germination by breaking dormancy, allowing seeds to sprout and grow.

5. **Conclusion**: Thus, Gibberellins and Abscisic Acid are antagonistic hormones because while Gibberellins promote growth and germination, Abscisic Acid promotes dormancy and stress responses.

### Final Answer:
The two hormones that are antagonistic in action are Gibberellins and Abscisic Acid (ABA).

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