Which one of the following statements about certain given animals is correct?
Flat worms (Platyhelminthes) are coelomates
Round worms (Aschelminthes) are pseudocoelomates
Molluses are acoelomates
Insects are pseudocoelomates
Coelomates are animals that contain coelom. Acoelomates are animals that do not have a coelom. Pseudocoelomates are animals that develop coelom from a cavity present inside the embryo. Mollusces and insects are coelomate and flatworms are acoelomate. Roundworms are pseudocoelomates. so the correct option is b.