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30 Cards in this Set
- Front
- Back
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arthropod
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invertebrate with jointed legs and a hard exoskeleton
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coelenterate
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invertebrate with stinging tentacles
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echinoderm
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invertebrate with spiny skin
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invertebrate
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animal with no notochord or backbone
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mollusk
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invertebrate with a soft body and usually a shell
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sponge
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invertebrate that has a body filled with holes and that cannot move about on its own
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worm
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invertebrate with a long, narrow body; may be flat, round, or segmented
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collar cells
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cells in a sponge that trap tiny plants and animals for food
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flagellum
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long, threadlike structure
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budding
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method of reproduction in which a small organism grows on the larger organism, then breaks away
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medusa
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jellyfish
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polyp
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small coelenterate with its closed end attached to a rock
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radial symmetry
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arrangement of parts in a circle around a center point
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reef
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large structure made of the skeletons of corals
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tentacle
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long, armlike structure on a coelenterate
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flatworm
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worm with a flat body; most simple worm
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parasite
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organism that lives on and benefits from another animal withou benefiting that animal in any way
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roundworm
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worm with a long, thin, round body
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segmented worm
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worm with a segmented body; the most complex worm
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bivalve
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mollusk that has a shell with two hinged halves
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cephalopod
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mollusk with a large head and a foot divided into tentacles
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gastropod
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mollusk with a single shell and one or two sets of tentacles
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mantle
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stucture in mollusks that covers the body and often makes a shell
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radula
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ribbonlike tongue with many small, sharp teeth
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siphons
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long tubes in bivalves that take in food and water and get rid of waste
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tube feet
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tiny tubelike structures in echinoderms that help them move, gather food, feel, and breathe
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arachnid
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arthropod with no wings, four pairs of legs, no antennae, and two body parts
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bilateral symmetry
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arrangement of body parts so left and right sides are mirror images
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chitin
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hard material that makes up the exoskeleton of arthropods
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crustacean
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arthropod with more than three pairs of legs and most often two pairs of antennae
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