Which set of animals belongs to the same phylum?

Options

A. Meandrina, Beroe
B. Planaria, Ascaris
C. Cattle fish, Tusk shell
D. Silver fish, Dog fish

Answer

To determine which set of animals belongs to the same phylum, we can analyze the animals mentioned in the question and categorize them based on their respective phyla. Here’s a step-by-step breakdown:

### Step 1: Identify the Animals and Their Phyla
1. **Meandrina** - This organism belongs to the phylum **Cnidaria**.
2. **Beroe** - This organism belongs to the phylum **Ctenophora**.
3. **Planaria** - This organism belongs to the phylum **Platyhelminthes**.
4. **Ascaris** - This organism belongs to the phylum **Nematoda**.
5. **Cuttlefish** (Cuttlefish) - This organism belongs to the phylum **Mollusca**.
6. **Tusk Fish** - This organism also belongs to the phylum **Mollusca**.
7. **Silverfish** - This organism belongs to the phylum **Arthropoda**.
8. **Dogfish** - This organism belongs to the phylum **Chordata**.

### Step 2: Group Animals by Phylum
- **Cnidaria**: Meandrina
- **Ctenophora**: Beroe
- **Platyhelminthes**: Planaria
- **Nematoda**: Ascaris
- **Mollusca**: Cuttlefish, Tusk Fish
- **Arthropoda**: Silverfish
- **Chordata**: Dogfish

### Step 3: Identify the Common Phylum
From the analysis, we can see that **Cuttlefish** and **Tusk Fish** are both classified under the phylum **Mollusca**.

### Conclusion
Thus, the correct answer to the question is that the set of animals that belong to the same phylum is **Cuttlefish and Tusk Fish**, which are both in the phylum **Mollusca**.

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