Question

What is the major unifying Aschelminth feature?

Answer 1

Aschelminthes:

1. Aschelminthes are called roundworms, as they have a circular cross-section.
2. The unifying features of aschelminthes are presence of pseudocoelom.
3. Coelom is the body cavity lined by mesoderm.
4. In some animals, the body cavity is not lined by mesoderm.
5. Here mesoderm is present as scattered pouches.
6. Such animals are called pseudocoelomates.
7. Aschelminthes are bilaterally symmetric and triploblastic.
8. They also have well developed muscular pharynx.
9. Examples: Ascaris, Wuchereria, etc.

Thus, the major unifying Aschelminth feature is that they are pseudocoelomate.