Symmetry in Coelenterates is mostly

Options

A. Asymmetrical
B. Radially symmetrical
C. Bilaterally symmetrical
D. Irregular.

Answer

### Step-by-Step Solution:

1. **Understanding Symmetry in Animals**:
- In the animal kingdom, organisms can exhibit different types of symmetry: bilateral symmetry, radial symmetry, and asymmetry.

2. **Identifying the Phyla**:
- The question specifically pertains to Coelenterates, also known as Cnidaria, which includes organisms like Hydra and Obelia.

3. **Types of Symmetry in Coelenterates**:
- Coelenterates are predominantly radially symmetrical. This means that these organisms can be divided into two equal halves by multiple planes that pass through their central axis.

4. **Examples of Radial Symmetry**:
- A good analogy for radial symmetry is a sphere or an apple, which can be sliced into equal halves in various ways through its center.

5. **Considering Other Types of Symmetry**:
- While Coelenterates are mostly radially symmetrical, it is important to note that they can also exhibit bilateral symmetry in some cases, but this is not the primary form.

6. **Conclusion**:
- Therefore, the correct answer to the question regarding the type of symmetry in Coelenterates is that they are mostly radially symmetrical.

### Final Answer:
- The symmetry in Coelenterates is mostly **radially symmetrical**.