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27 Cards in this Set
- Front
- Back
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Acoelomate
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Animal lacking a coelom, or body cavity
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Coelom
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Fluid-filled body cavity lined with mesoderm
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Pharynx
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Muscular tube at the end of the gastrovascular cavity, or throat that connects the mouth with the rest of the digestive tract and serves as a passageway for air and food
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Flame cell
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Specialized cell that filters and removes excess water from the body of a flatworm
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Ganglioin
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Group of nerve cells
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Eyespot
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Group of cells that can detect changes in the amount of light in the environment
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Hermaphrodite
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Individual that has both male and female reproductive organs
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Proglottid
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One of the segments that make up most of a tapeworms body
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Testiis
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Male gonad that produces sperm
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Pseudocoelom
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Temporary projection of cytoplasm , or a "false foot" used by some protists for feeding or movement
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Anus
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Opening through which wastes leave the digestive tract
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Septum
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Internal wall between the segments of many annelids
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Seta
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bristle attached to the segments of many annelids
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Crop
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In earthworms, part of the digestive system in which food can be stored
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Gizzard
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In earthworms, part of the digestive system in which food is ground into smaller pieces
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Closed circulatory system
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System in which blood is continued within a network of blood vessels
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Gill
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filamentous organ in aquatic animals specialized for the exchange of gases with water
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Nephridium
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Excretory organ of an annelid that filters fluid in the coelom
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Clitellum
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Band of thickened, specialized segments in annelids that secretes a mucus ring into which eggs and sperm are releases
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Trocophore
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Free-swimming larval stage of an aquatic mollusk
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Foot
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Muscular part of a mollusk
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Mantle
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Thin layer of tissue that covers most of a mollusk's body
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Shell
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Structure in mollusk s made by glands in the mantle that secrete calcium carbonate
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Visceral Mass
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Area beneath the mantel of a mollusk that contains the internal organs
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Radula
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Tongue-shaped structure used for feeding by snails and slugs
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Siphon
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Tube like structure though which water enters and leaves a mollusks body
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Open Circulatory System
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System in which blood is not always contained within a network of blood vessels
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