Hydra is a diploblastic animal.

Answer

To determine whether the statement "Hydra is a diploblastic animal" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Diploblastic Animals**:
- Diploblastic animals are characterized by having two primary germ layers: the ectoderm and the endoderm.

2. **Identify Germ Layers in Hydra**:
- In Hydra, the outer layer is called the ectoderm, and the inner layer is called the endoderm.

3. **Check for Additional Layers**:
- Between the ectoderm and endoderm, Hydra has a layer of undifferentiated cells known as mesoglea. However, this layer is not considered a third germ layer.

4. **Conclusion**:
- Since Hydra has only two primary germ layers (ectoderm and endoderm), it fits the definition of a diploblastic animal. Therefore, the statement "Hydra is a diploblastic animal" is true.

### Final Answer:
The statement is **true**.

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