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29 Cards in this Set
- Front
- Back
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Visceral Mass
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Central section of a mollusk's body that contains the mollusk's organs
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Mantle
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Layer of tissue that covers the body of many invertebrates
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Foot
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An appendage that some invertebrates use to move
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Radula
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A rasping, tongue-like organ that is covered with teeth and that is used for eating
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Trochophore
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Free-swimming, ciliated larva of many worms and some mollusks
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Siphon
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Hollow tube of mollusks used for sucking and expelling sea water
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Seta
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One of the external bristles or spines that project from the body of an animal
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Septum
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A dividing wall, such as the internal wall between an annelid's adjacent segments
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Cerebral Ganglium
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One of a pair of nerve-cell clusters that serve as a primitive brain
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Thorax
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Mid-body region in arthropods
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Cephalothrax
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Body part made up of the head and the thorax in arachnids and some crustaceans
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Appendage
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A structure that extends from the main body, such as a limb, tentacle, fin, or wing
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Trachea
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Network of air tubes in insects, myriapods, and spiders
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Spiracle
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External opening in an insect or arthropod, used in respiration
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Malpighian Tubule
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An excretory tube that opens into the back part of the intestine of most insects and certain arthropods
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Compound Eye
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An eye composed of many light detectors separated by pigment cells
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Molting
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The shedding of an exoskeleton, skin, feathers, or hair to be replaced by new parts
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Chelicera
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Either of a pair of appendages used to attack prey in arachnids
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Pedipalp
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One of the second pair of appendages in certain arthropods
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Spinneret
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An organ that spiders and certain insect larvae use to produce silky threads for webs and cocoons
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Mandible
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Type of mouth part found in some arthropods that is used for eating
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Metamorpohisis
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A phase in the life cycle of many animals during which rapid change from the immature organism to the adult takes place
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Chrysalis
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The hard-shelled pupa of certain insects, such as butterflies
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Pupa
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The immobile, non-feeding stage between the larva and the adult of insects that undergo complete metamorhposis
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Caste
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Group of insects in a colony that have a specific function`
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Ossicles
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One of the small, calcium carbonate plates that make up the endo-skeleton of an echinoderm
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Water-Vascular system
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A system of canals filled with a watery fluid in echinoderms
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Tube foot
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One of many small, flexible fluid-filled tubes that project from the body of an echinoderm and that are used in locomotion, feeding, gas exchange, and excretion
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Skin Gill
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Transparent structure that projects from the surface of a sea star and that enables respiration
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