Bio animals

1.) Chordates are animals that posses a notochord, a hollow dorsal nerve cord, and pharyngeal slits at some point in its development. 2.) Vertebrates have a backbone, an endoskeleton, or skeleton on the inside of the body, a large brain in a skull, a large brain in a skull, an advanced nervous system. A complex heart and circulatory system, a special kind of outer covering, one or two pairs of appendages. 3.) The five classes of a vertebrate …

…are also able to communicate on a higher level. And some have been able to develop a complex society. 32.) The advantage of a vertebrate is the backbone allowed them to evolve into standing human beings so we can use hands to perform complex tasks. 45.) The key of this chapter was to teach us more about the different types of species we live with and how they function and how they are different from one another.