Answer the following question given this paragraph: 

There are two basic body plans in cnidarians. They are called the polyp and medusa. Both are shown in Figure below . The polyp has a tubular body and is usually sessile. The medusa (plural, medusae ) has a bell-shaped body and is typically motile. Some cnidarian species alternate between polyp and medusa forms. Other species exist in just one form or the other.


Q: There are two basic body plans in cnidarians which are called the polyp and what else?

 Choices:

- hydra

- spore

- stoma

- medusa

A:
medusa
