Crayfish Test Review A crayfish’s hard, shell-like covering is called a(n) _______. a. b. c. d. swimmerets carapace cephalothorax exoskeleton Exoskeleton A crayfish’s smaller pairs of legs are used for all of the following EXCEPT… a. walking b. hearing c. tearing food apart d. cleaning themselves Hearing What is one way crayfish avoid danger? Crayfish avoid danger in the following ways: a. opening and closing claws b. fighting with claws c. waving their claws We have learned that crayfish are able to grow back body parts. What is this called? a. b. c. d. regenerate regurgitate retaliate regerminate regenerate A female crayfish who has eggs is said to be ________. a. b. c. d. in mud in berry in peaches in jam in berry The exoskeleton does not grow as the crayfish eats and grows. Crayfish must __________. a. molt b. hibernate c. burrow d. shake its shell off molt A crayfish’s eyes are on ________. a. b. c. d. the tail claws short stalks the swimmerets short stalks Crayfish are crustaceans. Which of the following is NOT a member of the crustacean family? Lobster Crayfish Shrimp Armadillo Armadillo What do crayfish breathe with? Gills There are about how many species of crayfish in the United States? 500 Other than bait, what other use do crayfish have to humans? Humans eat crayfish All of these animals are enemies of crayfish except_____. Fish Alligators Raccoons Mice Mice What does the crayfishes fanlike tail help it to do? Move Backward A crayfish uses its claws for all of the following except ____. Catching food self-defense Fighting To attract a mate Attract a mate What type of eye does a crayfish have? Compound Eye What are two other names for crayfish? • Crawfish or Crawdads Do crayfish hunt during the day or at night? • At night How long can crayfish live? • Anywhere between 2 and 20 years What are three different colors of crayfish? • They can be pink, white, red, black, blue, or green What are the two MAIN body parts of a crayfish? Hint: the first part is a combination of the head and thorax. • The cephalothorax and the abdomen What family do crayfish belong to? • Crustaceans True or false: Crayfish love warm weather and sunshine. • False! How does a crayfish’s antenna help him/ her? • It helps him to smell, feel, and taste.