| A | B |
|---|
| class chondricthyes | cartilage fish (sharks, rays and skates) |
| class agnatha | jawless fish (lamprey and hagfish) |
| class osteichthyes | bony fish (perch) |
| class amphibia | dual life (frogs, toads, salamanders, newts) |
| class reptilia | dry scaly skin (alligators, turtles, snakes) |
| class mammalia | have mammary glands, hair and fur |
| swim bladder | helps a bony fish move up and down in the water |
| operculum | bony covering protects the gills |
| fat bodies | energy for amphibians during mating season |
| spleen | gets rid of worn out blood cells and makes new ones |
| large intestine | makes fecal matter |
| pancreas | makes digestive enzymes |
| stomach | begins process of digestion |
| pyloric caeca | found in perch, makes digestive enzymes |
| fish heart | 2 chamber, atrium and ventricle |
| frog heart | 3 chambers, 2 atria and 1 ventricle |
| 4 traits of chordates | notochord, dorsal hollow nerve cord, pharyngeal gill slits and postanal tail |
| order carnivora | meat eaters |
| order artidactyla | even toed |
| order primata | opposable thumb |
| order proboscidae | trunk bearing |
| order chirpotera | flying mammals |
| order insectivora | insect eaters |
| order monotremata | egg laying |
| order marsupial | pouched |
| order perrisodactyla | odd toed |
| order rodentia | incisor teeth |
| gall bladder | stores bile |
| liver | makes bile (emilsifes fat) |
| kidneys | excretory organ (rids body of liquid and nitrogen waste) |
