Differentiate between Collenchyma and aerenchyma

Explanation

### Step-by-Step Solution:

1. **Definition**:
- **Collenchyma**: Collenchyma cells are a type of ground tissue found in plants that provide mechanical support and flexibility. They are characterized by their unevenly thickened cell walls.
- **Aerenchyma**: Aerenchyma is a specialized type of parenchyma tissue that contains large air spaces, primarily found in aquatic plants. It aids in buoyancy and gas exchange.

2. **Location**:
- **Collenchyma**: These cells are typically found in the stems and petioles of young plants, providing support as they grow.
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