Which of the following is NOT a characteristic shared by all chordates?
A. Solid nerve cord
B. Notochord
C. Postanal tail
D. Pharyngeal pouches
I think it might be B because the notochord is replaced by a backbone in vertebrate chordates or D because pharyngeal pouches develop into different structures in non-marine chordates PLEASE HELP
I believe this is a bit of a trick question, while you are right about both B and D, they both preexist they just develop into other structures. I believe the correct answer is A since the nerve cord is hollow not solid.
