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18 Cards in this Set
- Front
- Back
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Mollusk
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an invertebrate with a soft, unsegmented body; most are protected by a hard outer shell
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Open Circulatory System
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A circulatory system in which the heart pumps blood into open spaces in the body is not confined to blood vessels.
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Gill
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an organ that removes oxygen from the water.
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Gastropod
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A mollusk with a single or no shell.
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Herbivore
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A consumer that eats only plants.
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Carnivore
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A consumer that eats only animals.
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Radula
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A flexible ribbon of tiny teeth in mollusks
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Bivalve
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A mollusk that has two shells held together by hinges and strong muscles.
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Omnivore
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A consumer that eats both plants and animals.
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Cephalopod
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An ocean-dwelling mollusk whose foot is adapted as tentacles that surround its mouth
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Arthropod
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An invertebrate that has an external skeleton, a segmented body, and jointed appendages
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Exoskeleton
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A waxy, waterproof outer shell or outer skeleton that protects the animal helps prevent evaporation of water
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molting
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the process of shedding an outgrown exoskeleton
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Antenna
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An appendage on the head of an arthropod that contains sense organs
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Crustacean
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An arthropod that has two or three body sections, five or more pairs of legs, and two pairs of antennae
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Metamorphosis
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a process in which an animal’s body undergoes dramatic changes in form during its life cycle
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Arachnid
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An arthropod with two body sections, four pairs of legs, and no antennae
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Abdomen
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The hind sections of an arthropod’s body that contains its reproductive organs and part of its digestive tract
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