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animals through 3-4

cnidarian A radially symmetrical invertebrate that uses stinging cells to capture food and defend itself
mollusk An invertebrate with a soft unsegemented body most are protected by a hard outer side
arthropod an invertebrate that has an external skeleton a segemented body and jointed appendages
exoskeleton external skeleton a tough waterproof outer covering that protects supports and helps prevent evaporation of water from the body of many invertebrates
echinderm a radially symmetrical marine invertebrate that has an internal skeleton and a system of fluid filled tubes
endoskeleton an internal skeleton structural support stystem within the body of an animal
chordrate an animal that has a notochord a nerve cord and throat pouches at some point in its life
notochord a flexible rod that supports a chordates back just below the nerve cord
vertbrate a animal with a backbone
ectotherm an animal whose body temperature is determined by the temparture of its envirment
endothderm an animal whos body tempature is regulated by the internal heat the animal produces
Created by: Katiegirl28!