You find what you believe is a new species of animal. Which of the following characteristics would enable you to argue that it is more closely related to a flatworm than it is to a roundworm?

Question

Quizplus · Accepted Answer

The absence of a coelom is a characteristic shared by both flatworms and the newly discovered species. Roundworms have a pseudocoelom, which is a fluid-filled body cavity that is not completely lined by mesoderm. The other characteristics listed are not specific to flatworms and are found in other animal phyla as well.

You Find What You Believe Is a New Species of Animal