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18 Cards in this Set
- Front
- Back
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CUTICLE
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a tough coat that covers the body of a nematode
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MOLTING
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a process in ecdysozoans in which the exoskeleton is shed at intervals, allowing growth by the production of a larger exoskeleton
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ARTRHOPOD
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a segmented ecdysozoan with a hard exoskeleton and jointed appendages; familiar examples include insects, spiders, millipedes and crabs
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OPEN CIRCULATORY SKELETON
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a circulatory system in which fluid called hemolymph bathes the tissues and organs directly and there is no distinction between the circulating fluid and the interstital fluid
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CHELICERIFORNS
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an arthropod that has chelicerae and a body divided itno a cephalothorax and an abdomen; living cheliceriforns include sea spiders, horseshoe crabs, scorpions, ticks and spiders
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MYRIAPODS
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a terrestrial arthropod with many body segments and one or two pairs of legs per segment; millipedes and centipedes comprise the 2 classes of living myriapods
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HEXAPOD
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an insect or closely related wingless, six-legged arthropod
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CRUSTACEAN
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a member of a subphylum of mostly aquatic arthropods that includes lobsters, crayfishes, crabs, shrimps and barnacles
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CHELICERA
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one of a pair of clawlike feeding appendages characteristic of chelicerforns
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EURYPTERID
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an extinct carniverous cheliceriform also called a water scorpion
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ARACHNID
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a member of a major arthropod group, the chelicerifroms; arachnids include spiders, scorpions, ticks and mites
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BOOK LUNG
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an organ of gas exchange in spiders, consisting of stacked plates contained in an internal chamber
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MANDIBLE
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one pair of jaw-like feeding appendages found in myriapods, hexapods and crustaceans
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INCOMPLETE METAMORPHOSIS
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a type of development in certain insects, such as grasshoppers in which the young (nymphs) resemble adults but are smaller and have different body proportions; the nymph goes through a series of molts, each time looking more like an adult, until it reaches full size
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COMPLETE METAMORPHOSIS
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the transformation of a larva into an adult that looks very different and often functions very differently in its environment, than the larva
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ISOPOD
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a member of one of the largest groups of crustaceans, which includes terrestrial, freshwater, and marine species; among the terrestrial isopods are the pill bugs or wood lice
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DECAPOD
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a member of the group of crustaceans that includes lobsters, crayfishes, crabs and shrimps
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COPEPOD
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any of a group of small crustaceans that are important members of marine and freshwater plankton communities
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