Why are sponges and coelenterates called diploblastic animals.

Explanation

To understand why sponges and coelenterates are called diploblastic animals, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Definition of Diploblastic**:
- The term "diploblastic" refers to organisms that develop from two primary germ layers during embryonic development. These layers are the ectoderm and the endoderm.

2. **Germ Layers Explained**:
...