As Part of Your Independent Study in Field Biology,you Are

Multiple Choice

As part of your independent study in field biology,you are sent to a small,inland sea.In one of your samples,you discover a small eel-like creature.It has a stiff,rod-shaped structure running the length of its dorsal side,with a line of nervous tissue running along with it.You would begin the process of classifying this organism by placing it in phylum:

A) Vertebrata.
B) Arthropoda.
C) Chordata.
D) Cnidaria.
E) Mollusca.