A) develops from the pharyngeal gill slits. B) is for muscle attachment. C) forms the nerve cord in an adult. D) becomes the brain. E) becomes the digestive system.
How does the nerve cord of chordates differ from the nerve cord of animals in other taxonomic groups?
A) It is surrounded by bone. B) It does not develop until after the embryonic period. C) It develops from the gill slits. D) It runs along the dorsal side of the body. E) It does not extend into the tail.