Marine Biology 180

Marine Biology 180

What is the name of the five-toothed feeding structure in sea urchins? Give an example of a method of defense in sea cucumbers? Describe an example of a free-living Tunicate. Why are tunicates members of the Phylum Chordata?Answer must be 12 sentances in APA style format. I have attached a copy of the ruberic, instructional, and text book.