Which of the following phylum is pseudocoelomate

Options

A. Aschelminthes
B. Arthropoda
C. Annelida
D. Platyhelminthes

Answer

To determine which of the following phyla is pseudocoelomate, we will analyze each option provided:

1. **Aeschylmenthes**: This phylum is indeed pseudocoelomate. In Aeschylmenthes, the body cavity (pseudocoel) is present but is not lined by mesoderm. This means that the space between the body wall and the digestive tract is filled with fluid and is not surrounded by mesodermal tissue.

2. **Arthropoda**: This option is incorrect. Arthropods are coelomates, which means they possess a true coelom that is fully lined by mesoderm. The coelom in arthropods develops from the splitting of the mesoderm.

3. **Annelida**: This option is also incorrect. Annelids are coelomates as well. They have a true coelom that is formed from the mesoderm, similar to arthropods.

4. **Platyhelminthes**: This option is incorrect too. Platyhelminthes, or flatworms, are acoelomates, meaning they do not have a body cavity at all.

Based on this analysis, the only phylum that is pseudocoelomate is **Aeschylmenthes**.

**Final Answer**: Aeschylmenthes is the pseudocoelomate phylum.

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