Describe the functions of sclerenchyma.

Explanation

### Step-by-Step Solution:

1. **Definition of Sclerenchyma**:
- Sclerenchyma is a type of simple permanent tissue found in plants. It consists of dead cells at maturity, which lack protoplasm and have thick secondary cell walls.

**Hint**: Remember that sclerenchyma cells are dead and have thick walls, which is key to their function.

2. **Mechanical Support**:
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