Give the role of the following:
Aerenchyma

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Aerenchyma**: Aerenchyma is a specialized type of parenchyma tissue that contains large air cavities or spaces within its cells.

2. **Occurrence**: Aerenchyma is typically found in aquatic plants, such as hydrilla and pistia. These plants thrive in waterlogged or submerged conditions.

3. **Role of Aerenchyma**: The primary role of aerenchyma is to provide buoyancy to the plants. The air-filled cavities reduce the overall density of the plant, allowing it to float on the water surface.

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