Crayfish Crossword Puzzle

QUESTIONS LIST:

• green glands : crayfish kidneys, excrete waste throughout the body
• circulatory : open system, lacks any arteries or veins, blood is pumped into the hemocoel
• gills : large, feathery structures used for gas exchange, connected to the base of the walking legs
• swimmerets : aid in movement, located in the abdomen, used to determine the sex of the crayfish
• cephalothorax : "head" region, anterior of the abdomen, contains 13 body segments
• abdomen : second body section, has 6 segments, contains the swimmerets
• photophore : light-producing organ in certain bio-luminescent animals
• telson : middle of the uropods, bears the anus, long in horseshoe crabs
• krill : shrimplike creatures, filter feeders, mostly bioluminescent
• mandible : true jaws, located beneath the antennae
• decapods : crab, lobster, and true shrimp belong in this group
• exoskeleton : made of protein and chitin, protective layer
• cirriped : feathery appendages, extends into water when shell opens
• coea : larval stage in crabs and shrimp
• palp : chelicerae used to capture prey, sensory structures
• ovarian duct : crescent-shaped slit at the base of the third walking legs in female crayfish
• chitin : complex carbohydrate, makes up the exoskeleton
• carapace : shield of chitin, part of exoskeleton that covers the cephalothorax
• molt : process in which animal sheds its old exoskeleton
• coconut : type of crab, largest terrestrial arthropod, named after the hard-shelled fruit it eats