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Marine Invertebrates


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endoskeleton the name of the shell that covers the cephalothorax
crustacea another name for the large digestive "tomali" in some crustaceans
carapace squids have two attached at the gills, one that supplies the rest of the body
medusa animals in this phylum have jointed appendages and a chitinous exoskeleton.
bivalvia another name for "losing your guts", especially in sea cucumbers
gastropoda a class of mollusk with animals that have a muscular foot and, in many cases, a spiral shell
molt when a sea star or arthropod replaces a lost appendage
planula the main body region of a crustacean
hepatopancreas the name of the first type of crab larvae
ambulacral the bell-shaped stage of a cnidarian
cephalopoda animals in this subphylum have two pairs of antennae, compound eyes and gills.
arthropoda the name of the sponge and cnidarian larvae
alternationofgenerations the description of the cnidarian life cycle which changes from medusa to polyp
aristotleslantern the appendages that make up the mouth of a crustacean
echinoidea a class of mollusk with 8 or more arms
eviscerate the name of the second type of crab larvae
tubefeet the animals in this mollusk class have two shells.
brittlestars the five large teeth found in sea urchins
gastric mill agile, scrawny sea stars in the class ophiuroidea
asteroidea in crustaceans, these are attached to the legs and are found under the carapace.
megalops in mollusks, a tongue with teeth
radula the "teeth" in the stomach of a crustacean
maxillipeds the class of echinderms that includes sand dollars and sea urchins
papillae the phylum of invertebrates that includes sea stars, urchins and sand dollars
echinodermata the shell-like endoskeleton of sea urchins
gills squids have eight arms and two of these longer appendages
cheliped the class name for sea cucumbers
cephalothorax the name for a skeleton found on the inside of organism
zoea the large claw-bearing appendages of crustaceans
tentacles these structures cut through the body walls of some echinoderms allowing them to respire
heart what crustaceans must do to grow a new exoskeleton
regenerate the class of echinoderms that includes sea stars
test the groove in which tubefeet of echinoderms are found
holothuroidea the dozens of suction-cups that allow echinoderms to crawl

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