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Chapter 9 Vocabulary

TermDefinition
adaptation An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.
asymmetry A body plan in which an animal can NOT be divided into equal/mirror 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.
invertebrate An animal without a backbone.
organ A body structure that is composed of different kinds of tissues that work together.
radial symmetry A body plan in which any number of imaginary lines that all pass through a central point divide the animal into two mirror images.
tissue A group of similar cells that perform a specific function.
vertebrate An animal with a backbone.
cell The basic unit of structure and function in living things.
organ system A group of organs that work together to perform a major function.
Created by: user-1537649
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