Q. Which one of the following statements about certain given animals is correct ?
A) Flat worms (Platyhelminthes) are coelomates
B) Round worms (Aschelminthes) are pseudocoelomates
C) Molluscs are acoelomates
D) Insects are pseudocoelomates
Explanation
[Solution from source] Aschelminthes (roundworms) have a body cavity that is not lined by mesoderm all round (mesoderm occurs only as scattered pouches), so they are pseudocoelomates. Flatworms are acoelomate, while molluscs and arthropods such as insects are true coelomates. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.