During Embryonic Development Mesoderm Is Present as Scattered?

When body cavity is not lined by mesoderm, instead the mesoderm is present as scattered pouches in between the ectoderm and endoderm. Such a body cavity is called pseudocoelom.

When mesoderm is present as scattered pouches in between the ectoderm and endoderm such a body cavity is called?

(vi) In some organisms, body cavity is not lined by mesoderm, instead mesoderm is present in the form of scattered pouches in between ectoderm and endoderm, Such body cavity is called pseudocoelom and animals possessing there stusturs are refered to as pseudocoelomates e.g.,Ascaris.

In which members mesoderm occurs as scattered pouches?

Mesoderm is present as scattered pouches between the ectoderm and endoderm in (1)Annelids (2)Echinoderms (3)Molluscs 4) Aschelminthes.