Animals with a nerve cord along the back and gill slits during some developmental stage are called which of the following?
a. insects
b. invertebrates
c. chordates
d. metazoans
e. all of these
Answer: C
Animals with a nerve cord along the back and gill slits during some developmental stage are called which of the following?
a. insects
b. invertebrates
c. chordates
d. metazoans
e. all of these