The animals, in which the mesoderm is present as scattered pouches in between the ectoderm and endoderm, are called pseudocoelomates, e.g., Aschelminthes. Ascaris is a member of Aschelminthes and its adult has a body cavity called pseudocoel.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.