Name these structures. What is their function?

Which animal pictured is male? What kind of body cavity does this animal have?

What are this animal’s segments called? What kind of body cavity does it have?

Name this organism . Is is polyp, medusa, or both?  

On most segments, this animal has many tiny bristles (A) called __________ attached to fleshy lobes (B)  called

Structure C is the _________ groove. This side of the starfish is called the _______ surface.

Name this organism. What kind of circulatory system does it have?

Bonus – up to 4 pts. Number and write your answers below. 1. Corals belong to what class of animal? 2. What phylum of animals do humans belong to? 3. What phylum of animals do barnacles belong into? 4. What phylum of animals do chitons belong to?

What phylum does this organism belong to? Name the open space in the middle of this organism.

This animal’s respiratory system consists of branching tubes (A) called , connected to external openings called