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10.2 Science Vocab.
| Term | Definition |
|---|---|
| arthropod | invertebrates that have an external skeleton, segmented body, and appendages. |
| exoskeleton | outer skeleton. |
| molting | shedding an outgrown exoskeleton. |
| antenna | an appendage attached to the head that contains sense organs. |
| crustacean | arthropod that has two or three body sections, five or more pairs of legs, and two pairs of antennae. |
| metamorphosis | an animal's body undergoes dramatic changes in form during its life cycle. |
| arachnids | arthropods with two body sections, four pairs of legs, and no antennae. |
| abdomen | hind section that contains reproductive organs and part of the digestive system. |