Q: What do vertebrates have which invertebrates do not?


Read this paragraph and choose the correct option from the provided answers:

Vertebrates have a backbone, but invertebrates do not. Except for the chordates, all animal phyla consist only of invertebrates. Chordates include both vertebrates and invertebrates.

 Choices:

- appendages

- fangs

- tails

- backbones


A:
backbones