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Homeostasis The condition in which an organism's internal environment is kept stable.
Adaptation An inherited behavior or physical characteristic that helps with reproduction and survival.
Vertebrate An animal with a backbone.
Invertebrate An animal without a backbone.
Tissue A group of similar cells that perform a specific function.
Organ A body structure that is composed of different kinds of tissues working together.
Radical symmetry A body plan with many lines of symmetry that all pass through a central point, and mirror each other.
Bilateral symmetry A body plan with one line of symmetry that divides the the left and right side that mirror each other.
Cnidarian A radially symmetrical invertebrate that uses stinging cells to capture food and defend itself.
Mollusk An invertebrate with a soft, unsegmented body and some have shells.
Arthropod An invertebrate that has an external skeleton, segmented body, and jointed appendages.
Exoskeleton A external skeleton a though, waterproof outer covering that protects and supports.
Echinoderm A radially symmetrical marine invertebrate that has an internal skeleton and system of fluid filled tubes.
Endoskeleton A internal skeleton or support system within the body.
Created by: Scibot!_!