All roundworms differ from flatworms in having a body cavity, also known as a pseudocoelom. This is a fluid-filled space that exists between the endoderm and mesoderm tissues in roundworms. This body cavity provides a space in which organs can be suspended and can function independently of the body wall.

In contrast, flatworms do not have a body cavity. They are acoelomates, meaning their bodies are solid between the outer surface and the cavity of the digestive system. Their organs are embedded in the tissue of the body.

Additionally, roundworms have a complete digestive system with both a mouth and an anus, while flatworms have an incomplete digestive system with only a single opening.

These are the main differences in the body structure of roundworms and flatworms.

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All roundworms differ from flatworms in having a body cavity, also known as a pseudocoelom. This is a fluid-filled space that exists between the endoderm and mesoderm tissues in roundworms. This body cavity provides a space in which organs can be suspended and can function independently of the body wall.

In contrast, flatworms do not have a body cavity. They are acoelomates, meaning their bodies are solid between the outer surface and the cavity of the digestive system. Their organs are embedded in the tissue of the body.

Additionally, roundworms have a complete digestive system with both a mouth and an anus, while flatworms have an incomplete digestive system with only a single opening.

These are the main differences in the body structure of roundworms and flatworms.

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All roundworms differ from flatworms in having a body cavity, also known as a pseudocoelom. This is a fluid-filled space that exists between the endoderm and mesoderm tissues in roundworms. This body cavity provides a space in which organs can be suspended and can function independently of the body wall.

In contrast, flatworms do not have a body cavity. They are acoelomates, meaning their bodies are solid between the outer surface and the cavity of the digestive system. Their organs are embedded in the tissue of the body.

Additionally, roundworms have a complete digestive system with both a mouth and an anus, while flatworms have an incomplete digestive system with only a single opening.

These are the main differences in the body structure of roundworms and flatworms.

All roundworms differ from flatworms in having

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