| A | B |
| excretory | gets rid of wastes |
| circulatory | transport system for oxygen, nutrients, etc. |
| digestive | breaks down nutrients |
| nervous | sends and receives information |
| endocrine | provides hormones to trigger functions |
| skeletal | supports body, protects organs |
| carnivore | meat eater |
| omnivore | meat and plant eater |
| herbivore | plant eater |
| predator | eats animals |
| prey | eaten by animals |
| open circulatory system | blood leaves vessels |
| closed circulatory system | blood stays in veins |
| gastrovascular cavity | invertebrate digestive system |
| filter feeding | getting food strained from water |
| vertebrate | animal with back bone |
| invertebrate | animal without back bone |
| peripheral nervous system | nerves on the outside of body |
| central nervous system | spine and brain |
| radial symmetry | spokes of a wheel |
| bilateral symmetry | 2 equal balanced halves |