Which one of the following is a matching set of a phylum and its three examples?

Options

A. Porifera- Spongilla, Euplectella, Pennatula
B. Cnidaria-Dentallium, Physalia, Aurelia
C. Plathyhelminthes-Planaria, Schistosoma, Enterobius
D. Mollusca-Loligo,Teredo, Octopus

Answer

To solve the question about matching a phylum with its examples, we will analyze each option provided and determine if the examples listed belong to the specified phylum.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a matching set of a phylum and three examples. We need to identify which option correctly pairs a phylum with examples that all belong to that phylum.

2. **Evaluate Option A**:
- Phylum: Porifera
- Examples: Spongilla, Uplectella, Penatula
- Analysis: Spongilla and Uplectella are indeed part of Porifera, but Penatula (also known as sea-pen) belongs to the phylum Cnidaria.
- Conclusion: This option is **not a match**.

3. **Evaluate Option B**:
- Phylum: Cnidaria (synedria is a class within Cnidaria)
- Examples: Dentalium, Fissilia, Orella
- Analysis: Fissilia and Orella belong to Cnidaria, but Dentalium is a mollusk and does not belong to this phylum.
- Conclusion: This option is **not a match**.

4. **Evaluate Option C**:
- Phylum: Platyhelminthes
- Examples: Plenaria, Cestoda, Enterobius
- Analysis: Plenaria (planarians) and Cestoda (tapeworms) belong to Platyhelminthes, but Enterobius (pinworms) belongs to Nematoda.
- Conclusion: This option is **not a match**.

5. **Evaluate Option D**:
- Phylum: Mollusca
- Examples: Lolligo, Teredo, Octopus
- Analysis: All three examples—Lolligo (squid), Teredo (shipworm), and Octopus—are indeed members of the phylum Mollusca.
- Conclusion: This option is a **match**.

6. **Final Answer**: The correct matching set of a phylum and its three examples is **Option D: Mollusca (Lolligo, Teredo, Octopus)**.