Select the incorrect match.

Options

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

Answer

To solve the question of selecting the incorrect match, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Identify the First Option: Cyclone and Spongiosilk**
- Cyclones are members of the phylum Cnidaria.
- The term "spongiosilk" refers to the gastrovascular cavity where digestion occurs in these organisms.
- **Conclusion:** This match is correct.

2. **Identify the Second Option: Hydra and Cylenteron**
- Hydra is indeed known as Cylenteron.
- Cylenteron refers to the gastrovascular cavity in cnidarians where digestion takes place.
- **Conclusion:** This match is correct.

3. **Identify the Third Option: Fasciola and Pseudocel**
- Fasciola is a type of flatworm and is classified as an Acoelomate.
- Acoelomates do not have a true body cavity (coelom) or a pseudocoelom.
- The term "Pseudocel" (which refers to a false cavity) is incorrectly associated with Fasciola.
- **Conclusion:** This match is incorrect.

4. **Identify the Fourth Option: Ferritima and Pseudocel**
- Ferritima is a type of organism that is indeed classified as a pseudocoelomate.
- Pseudocoelomates have a body cavity that is not completely lined by mesoderm.
- **Conclusion:** This match is correct.

### Final Conclusion:
The incorrect match is the third option: Fasciola and Pseudocel.