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Lesson 3 an 4 animal
Term | Definition |
---|---|
Cnidarians | A radial symmetrical invertabrate that uses stinging cells to capture food and defend itself. |
Arthropod | An invertabrate that has an external skeleton, segmented body, and jointed appendages. |
Mollusk | An invertabrate with a soft, unsegemented body; most are protected by a hard outer shell. |
exoskeleton | External skeleton: a tough waterproof outer covering that protects, supports, and helps prevent evaporation of water from the body of many invertabrates. |
Echinoderm | A radially symmetrical marine invertabrate that has and internal skeleton and a system of fluid-filled tubes. |
Endoskeleton | An internal skeleton; structural support system within the body of an animal. |
Chordate | An animal that has a notochord, a nerver cord, and throat pouches at some point in its life. |
Vertebrae | The bones that make up the backbone of an blood out to the lungs or body. |
endotherm | An animal whose body temperature is regulated by the internal heat the animal produces. |
ectotherm | An animal whose body temperature is determined by the temperature of its envirnment. |
notochord | A flexibile rod that supports a chrdates back just below the nerve chord. |