Q. Assertion : Aschelminthes are called as pseudo- coelomates.
Reason : In Aschelminthes, mesoderm is present as scattered pouches in between ectoderm and endoderm.

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Solution:

In Aschelminthes, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm. Hence, they are called pseudocoelomates.