Select the incorrect match.

Options

A. Sycon - Spongocoel
B. Hydra - Coelenteron
C. Fasciola - Pseudocoelom
D. Pheretima - Schizocoelom

Answer

To solve the question "Select the incorrect match," we need to analyze the given options one by one to identify which one does not correctly match the organism with its respective classification or characteristic.

### Step-by-Step Solution:

1. **Analyze the First Option: Zycone - Sponge**
- Zycone is indeed a type of sponge and belongs to the phylum Porifera.
- Sponges have a body structure that includes a cavity called the spongocele.
- Water enters through pores (ostea) and exits through the osculum.
- **Conclusion**: This match is correct.

2. **Analyze the Second Option: Hydra - Silentrata**
- Hydra is a member of the phylum Cnidaria, which was previously referred to as Silentrata.
- It has a cylindrical body structure and contains specialized cells called cnidocytes (not "needle blast").
- **Conclusion**: This match is also correct.

3. **Analyze the Third Option: Fasciola - Pseudocoelome**
- Fasciola is known as the liver fluke and belongs to the phylum Platyhelminthes.
- Platyhelminthes are acoelomate, meaning they do not have a true coelom or pseudocoelom; they lack a body cavity lined by mesoderm.
- The term "pseudocoelome" implies a false coelom, which is not applicable to Fasciola.
- **Conclusion**: This match is incorrect.

4. **Analyze the Fourth Option: Schizocoelom - Annelids**
- Schizocoelom refers to a true coelom that is present in many invertebrates, including annelids.
- Annelids, such as earthworms (e.g., Ferritima), possess a true coelom.
- **Conclusion**: This match is correct.

### Final Answer:
The incorrect match is **Fasciola - Pseudocoelome** (Option 3).

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