Aerenchyma is a specialised parenchyma occuring in aquatic plants.

Answer

**Step-by-Step Solution:**

1. **Understanding Aerenchyma**: Aerenchyma is a specialized type of parenchyma tissue found in certain plants, particularly those that grow in aquatic environments.

2. **Identifying Characteristics**: Aerenchyma is characterized by having large intercellular spaces. These spaces are essentially air-filled cavities that allow for gas exchange and buoyancy.

3. **Function of Aerenchyma**: The primary function of aerenchyma is to provide buoyancy to aquatic plants. The large air-filled spaces enable the plants to float on the surface of the water, which is crucial for their survival and growth in aquatic habitats.

4. **Conclusion**: Given the characteristics and functions of aerenchyma, the statement that "Aerenchyma is a specialized parenchyma occurring in aquatic plants" is true.

**Final Answer**: True

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