Sponges and coelenterates resemble each other in being diploblastic.

Answer

To determine whether the statement "Sponges and coelenterates resemble each other in being diploblastic" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Diploblastic":**
- Diploblastic organisms are characterized by having two primary embryonic layers: the ectoderm (outer layer) and the endoderm (inner layer). This means that their body structure is derived from these two layers.

2. **Identify the Groups:**
- Sponges belong to the phylum Porifera.
- Coelenterates (also known as Cnidarians) belong to the phylum Cnidaria.

3. **Examine the Body Structure of Sponges:**
- Sponges have a simple body structure that consists of two layers of cells: the outer layer (ectoderm) and the inner layer (endoderm), with a gelatinous substance called mesohyl in between. They do not have a true coelom.

4. **Examine the Body Structure of Coelenterates:**
- Coelenterates also exhibit a body structure with two layers: the ectoderm and endoderm. They possess a gastrovascular cavity for digestion and do not have a true coelom either.

5. **Compare the Two Groups:**
- Both sponges and coelenterates are indeed characterized by having two embryonic layers (ectoderm and endoderm) and lack a true coelom.

6. **Conclusion:**
- Since both sponges and coelenterates share the characteristic of being diploblastic, the statement is true.

### Final Answer:
The statement "Sponges and coelenterates resemble each other in being diploblastic" is **True**.

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