Which one is correctly matched ?

Options

A. Jelly Fish and Star Fish - Radial sym-
metry
B. Hydra and Shark - Bilateral symmetry
C. Tapeworm and Octopus - Radial sym-
metry
D. Amoeba and Sea Urchin - Asymmetry

Answer

To determine which option is correctly matched, we need to analyze the given pairs of organisms and their corresponding symmetry types.

### Step-by-Step Solution:

1. **Identify the Organisms and Their Groups**:
- **Jellyfish**: Belongs to the phylum Coelenterata (now often referred to as Cnidaria).
- **Starfish**: Belongs to the phylum Echinodermata.

2. **Understand Symmetry Types**:
- **Radial Symmetry**: Organisms can be divided into two equal halves from any plane. Common in organisms like jellyfish and starfish.
- **Bilateral Symmetry**: Organisms can be divided into two equal halves only along one plane. Common in organisms like sharks and octopuses.

3. **Analyze the First Pair (Jellyfish and Starfish)**:
- Both jellyfish and starfish exhibit radial symmetry. Therefore, this pair is correctly matched.

4. **Analyze the Second Pair (Hydra and Shark)**:
- Hydra (a coelenterate) exhibits radial symmetry, while sharks (a chordate) exhibit bilateral symmetry. This pair is incorrectly matched.

5. **Analyze the Third Pair (Tapeworm and Octopus)**:
- Tapeworms (platyhelminthes) exhibit bilateral symmetry, and octopuses (mollusks) also exhibit bilateral symmetry. This pair is incorrectly matched.

6. **Analyze the Fourth Pair (Amoeba and Sea Urchin)**:
- Amoeba (a protozoan) is asymmetrical, while sea urchins (echinoderms) exhibit radial symmetry. This pair is incorrectly matched.

7. **Conclusion**:
- The only correctly matched pair is **Jellyfish and Starfish** with **Radial Symmetry**.

### Final Answer:
The correctly matched pair is **Jellyfish and Starfish - Radial Symmetry**.