| A | B |
|---|
| Porifera | filter feeds; simplest animal; asymmetrical |
| Cnidarians | stinging cells on tentacles |
| Platyhelminthes | flatworms; no circulatory system |
| Nematoda | roundworms; microcopic; live mostly in soil |
| Annalid | segmented worms; more complex with a circulatory system |
| Molluska | soft bodied; most a protected by a hard shell |
| Echinoderm | "spiny-skin"; radial symmetry |
| Arthropoda | "jointed legs"; segmented body with exoskeleton |
| Fish | breath with gills; swim using fins; most have scales |
| Amplhibian | lays jelly-like eggs in water; thin skin; go through metamorphosis |
| Reptile | lay rubbery shelled eggs on land; have scales |
| Birds | have wings, feathers & beaks. Lay shelled eggs |
| Mammals | have fur; specialized teeth; feed babies with milk |
| sessile | animals that don't move about |
| exotherms | cold-blooded animals |
| endotherms | warm-blooded animals |
