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Lesson 3 and 4

Chapter 4

cnidarian a radially symmetrical invertebrate that uses stinging cells to capture food and defend i self
mollusk an invertebrate with a soft unsegmented body, most are protected by a hard outer shell
arthropod an invertebrate that has an external skeleton, a segmented body, and jointed appendanges
exoskeleton External skeleton;a tough,waterproof outer covering that protects ,supports, and helps prevent evaporation of water from the body of many invertebrates
echinoderm a radially symmetrical marine invertebrate that has an internal skeleton and a system of fluid filled tubes
endoskeleton an internal skeleton ;structural support system inside the body of an animal
chordate an animal that has a notochord ,a nerve cord and throat pouches at sometime in it's life
notochord a flexible rod that supports a chordates back just below the nerve cord
vertebra the bones that make up the backbone of an organisim
ectotherm an animal who's body temperature is determined by the temperature of the enviroment
endotherm an animal who's body temperature is regulated by the internal heat the animal produces
Created by: lolkat12