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

Options

A. Porifera- spongilla,Euplectella,Pennatula
B. Cnidaria-Bonellia,physalia,Aurelia
C. Platyhelminthes-Planaria, schistosoma, Enterobius
D. Mollusca- Loliga,Teredo, octopus

Answer

To solve the question regarding the matching set of a phylum and its three examples, we will analyze each option provided and determine if the examples correctly belong to the specified phylum.

### Step-by-Step Solution:

1. **Identify the Options**: We have four options, each consisting of a phylum and three examples.

2. **Evaluate Option A**:
- **Phylum**: Porifera
- **Examples**: Spongilla, Euplectilla, C. pennatula
- **Analysis**:
- Spongilla and Euplectilla belong to Porifera.
- C. pennatula belongs to Cnidaria, not Porifera.
- **Conclusion**: This option is incorrect.

3. **Evaluate Option B**:
- **Phylum**: Cnidaria
- **Examples**: Bonelia, Physalia, Aurelia
- **Analysis**:
- Bonelia and Physalia belong to Cnidaria.
- Aurelia also belongs to Cnidaria.
- **Conclusion**: This option is correct.

4. **Evaluate Option C**:
- **Phylum**: Platyhelminthes
- **Examples**: Planaria, Chistosoma, Anterobias
- **Analysis**:
- Planaria and Chistosoma belong to Platyhelminthes.
- Anterobias (which is a pinworm) belongs to Aschelminthes, not Platyhelminthes.
- **Conclusion**: This option is incorrect.

5. **Evaluate Option D**:
- **Phylum**: Mollusca
- **Examples**: Loligo, Pterido, Octopus
- **Analysis**:
- Loligo (squid), Pterido, and Octopus all belong to Mollusca.
- **Conclusion**: This option is correct.

6. **Final Decision**:
- After evaluating all options, we find that Option D is the only one where all examples correctly belong to the specified phylum.

### Answer:
The correct answer is Option D: Mollusca (with examples: Loligo, Pterido, Octopus).

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