What do you mean by plant growth inhbitors?

Explanation

### Step-by-Step Text Solution:

1. **Definition of Plant Growth Inhibitors**:
- Plant growth inhibitors are substances that slow down or prevent the growth of plants. They play a crucial role in regulating various physiological processes in plants.

2. **Examples of Plant Growth Inhibitors**:
- Two well-known plant growth inhibitors are **abscisic acid** and **ethylene**.

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