Is a frog a vertebrate or invertebrate?

Frogs are vertebrates because they have a full skeletal structure that includes a spinal cord. read more

A frog is a vertebrate because it has a backbone called a vertebra. They are classified in the phylum chordata which includes the vertebrates. The difference between a vertebrate and an invertebrate is the fact that vertebrates have a spinal cord (or back bone), and invertebrates do not. read more

Amphioxus is a chordate, as are all vertebrates, but it is not a vertebrate because although it has a firm notochord as an internal skeletal element, it does not have segmental vertebrae along the anterior-posterior axis of the body. read more