Nonvertebrate chordates,tunicates,and lancelets,differ from other chordates in that
A)they do not have a notochord.
B)they have gills,while other chordates have lungs.
C)they do not have jaws,while all other chordates do have them.
D)the notochord of nonvertebrate chordates does not become a vertebral column.
E)nonvertebrate chordates do not have a internal bony skeleton,while all other chordates do.

Question

Quizplus · Accepted Answer

Nonvertebrate chordates, including tunicates and lancelets, have a notochord, but it does not develop into a vertebral column as it does in other chordates such as fish, amphibians, reptiles, birds, and mammals. Additionally, they typically do not have bones or a fully developed internal skeleton. They may have gills or other respiratory structures, but not all have gills specifically, and the presence or absence of gills is not a defining characteristic of chordates. Lastly, while some nonvertebrates may lack jaws, this is not a universal characteristic of nonvertebrate chordates, as many have mouths with various adaptations for feeding.

Nonvertebrate Chordates,tunicates,and Lancelets,differ from Other Chordates in That