Question

Which is NOT a shared characteristic of all chordates?
A. A ventral, solid solid nerve cord
B. A notochord
C. Pharyngeal slits

Answer 1

I would say C

Answer 2

nope, it's A

"pharyngeal slits - a series of openings that connect the inside of the throat to the outside of the "neck". These are often, but not always, used as gills.
dorsal nerve cord - a bundle of nerve fibers which runs down the "back". It connects the brain with the lateral muscles and other organs.

notochord - cartilaginous rod running underneath, and supporting, the nerve cord.

post-anal tail - an extension of the body past the anal opening."

http://www.ucmp.berkeley.edu/chordata/chordata.html

Answer 3

Thank you!!