Echinodermata is a group of animals

Options

A. Coelomate, spiny and marine
B. Acoelomate, spiny and marine
C. Coelomata, horny and marine
D. Jointed legged, coelomate and marine.

Answer

**Step-by-Step Solution:**

1. **Understanding Echinodermata**: Echinodermata is a phylum of marine animals characterized by their spiny skin, radial symmetry, and a coelom (body cavity). Common examples include starfish, sea urchins, and sea cucumbers.

2. **Analyzing the Options**:
- **Option 1**: Coelomates, spiny, and marine. This aligns with the characteristics of Echinodermata.
- **Option 2**: Acoelomates, spiny, and marine. Acoelomates do not have a body cavity, which is incorrect for Echinodermata.
- **Option 3**: Coelomates, horny, and marine. Echinoderms have spiny structures, not horny ones, making this option incorrect.
- **Option 4**: Jointed legs, coelomate, and marine. This describes arthropods, not Echinodermata, so this option is also incorrect.

3. **Conclusion**: The correct description of Echinodermata is the first option: they are coelomates, spiny, and marine.

**Final Answer**: Echinodermata is a group of animals that are coelomates, spiny, and marine.

---