| A | B |
| Arthropod | Invertebrate that has an external skeleton, segmented body, and jointed appendages |
| Appendages | Gives animals the flexibilty and ability to move. wings, mouthparts, legs |
| Open Circulatory System | blood flows throughout the body, outside of blood vessels. |
| Exoskeleton | a waxy waterproof shell or outer skeleton. |
| Chitin | material that forms the exoskeleton |
| Molting | process of shedding an outgrown skeleton |
| Antenna | appendages on the head that contains sense organs |
| 4 Groups of Arthropod | Centipede, Millipede/Insects/Crustaceans/Arachnids |
| Metamorphosis | life cycle in which the bodies of animals undergo dramatic changes in form as they develop |