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Animals
Term | Definition |
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Tissue | A group of similar cells that perform a specific function |
Organ | A body structure that is composed of different kinds of tissue tat work together |
Radial Symmetry | A body plan in which any number of imaginary line that all pass through a central point divide the animal into two mirrors images |
Bilateral Symmetry | A body plan in which a single imaginary line divides the body into left and right sides that are mirror images of each other |
Adaption | A inherited behavior or physical characteristics that helps an organism survive and reproduce in its environment |
Homeostasis | The condition in which an organism's internal environment is kept stable in spite of changes in the external environment |
Vertibrate | An animal with a backbone |
Invertebrate | An animal without a backbone |
Cnidarian | A radially symmetrical invertebrate that uses stinging cells to capture food and defend itself |
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 joined appendages |
Exoskeleton | External skeleton; a tough, waterproof outer covering that protects, supports, and helps prevent evaporation of water from the body of many invertebrates |
Echinoderm | An animal whose body temperature is regulated by the internal heat the animal produces |
Endoskeleton | An internal skeleton; structural support system within the body of an animal |