Introduction to Marine Biology 4th Edition by George Karleskint,Richard Turner,James Small

تمرين 2

A sample of a deep-sea dredging contains an animal that is small, flat, and round. It has a ventrally located mouth, a stomach, but no intestines. To which of the groups of invertebrates introduced in this chapter does this animal probably belong? What other characteristics would the animal need to have to confirm your identification?