The aquatic animals of this phylum possess parapodia for locomotion.

Which class of animals possesses a closed circulatory system?

External segmentation is absent but internal segmentation is present in

Which of the following animal groups exhibits bilateral symmetry,is coelomate,triploblastic,and shows metameric segmentation?

Which one of the following is not a hermaphrodite animal?

Which of the following is an example of the class $Polychaeta$?