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19 Cards in this Set

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appendage
om arthopods, a structure that extends from the body wall
thorax
mid-body region in arthopods
cephalothorax
the body region of some arthopods that consists of a head fused with a thorax
compound eye
eye made of thousands of individual visual units
molting
a periodic shedding of an arthropod's exoskeleton; also found in some reptiles
trachea
tube taht carries air from the larynx tp the lungs
spiracle
respiratory opening of certain arthropods that allows fo rthe passage of air into the body
Malphighian tubule
slender, fingerlike organ of excretion that opens into the gut of certain arthropods
chelicera
paired mouthparts of arachnids and their relatives that are modified into fangs or pincers
pedipalp
in arachnids, a second pair of appendages that are modified to catch cand handle prey
spinneret
modified appendages in arthopods that secrete silk
mandible
chewing mouthpart found in arthopods
metamorphosis
dramatic physical change through which an immature orgainsm passes as it grows to adulthood
chrysalis
protective capsule enclosing the transforming larva in insects
pupa
stage of complete metamorphosis in which an insect changes from larva to adult
Nymph
juvenile stage of some insects that is a smaller version of the adult
Caste
role played by an individual insect in a colony
Nauplius
larval form of a crustacean
krill
small marine crustacean that is the chief food source for many marine species