Write a correct phylum name beside each of these terms. (a) radial symmetry, (b) pseudocoelom, (c) tissue level of organisation, (d) tube-within-a-tube body plan, (e) cephalization

Explanation

To answer the question, we will identify the correct phylum for each term provided. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Radial Symmetry**
- **Phylum**: Coelenterata (now often referred to as Cnidaria)
- **Example**: Hydra

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