| Term | Definition |
| carapace | hard outer covering or case of certain organisms such as arthropods and turtles |
| rostrum | A forward extension of the carapace that protects the crustacean s well-defined head. |
| antennules | serve as feelers sensitive to touch, taste, and equilibrium |
| compound eyes | What kind of eyes do Crustaceans have? |
| chelipeds | first pair of legs in crayfishes that bear large claws that are modified to catch, pick up, crush, and cut food |
| exoskeleton | A body covering, typically made of chitin, that provides support and protection |
| swimmerets | small paired appendages located on the ventral surface of the abdomen of crustaceans used for swimming or reproduction |
| uropods | last pair of apendages that are flat structures which help the cray fish swim rapidly backwards |
| zoeae | Female blue crabs release their larvae, called ______________, during spring high tides. |
| crayfish | A freshwater animal that has a hard shell and prominent pincers. |
| nocturnal | Active at night |
| amphiopoda | shrimp look alikes and have no carapace |
| copepods | Many species are planktonic crustaceans, and are a source of food and fertilizer. |
| branchiopods | small crustaceans with segmented bodies and chitonous bodies (daphnia, and fairy shrimp) |
| daphina | small creatures that do not have a circulatory system. clear/see through exoskeloton |
| brine | a mixture of water and salt; the ocean or water from the ocean |
| cirripedia | subclass, barnacles, body has overlapping plates, feeds with cirri basket |
| barnacles | A sessile crustacean whose body is usually covered by plates composed of calcium carbonate. |
| chephalothorax | the body region of some arthropods that consists of a head fused with a thorax |
| maxillipeds | enable crayfish to taste and hold food. |
| regenerate | The ability of an organism to re-grow lost parts. |
| molting | Process in which an arthropod sheds its exoskeleton and manufactures a larger one to take its place |
| decapoda | Which Order: is the largest and has 5 pairs of appendages |
| aquatic | A term that describes an organism associated with a water environment. |
| calcium | *Substance found in oyster shells, limestone, chalk and the human body |
