1-What characteristics do all chordates share? 2-What is an endoskeleton?
3-What were the first vertebrates to evolve?
4-What were the first vertebrates to evolve jaws?
4-Do cartilaginous fishes have a swim bladder?
6-What is the function of a fish's operculum?
7-What does the expression "terrestrial tetrapod" mean?
8-As babies, can all amphibians breathe underwater? Can all amphibians breathe underwater when they're adults?
8-What is one difference between reptiles and amphibians?
10-Which reptiles are endothermic?
11-Which subgroup of mammals raise their young in pouches?
12-Humans belong to which subgroup of mammals?
13-What are the Phylum, Class, and Order that humans belong to?
14-Are anthropoid or non-anthropoid primates more closely related to humans?
15-For how many different species of extinct hominins have we found fossils?