biology vocabulary word group 8. invertebrate an animal that does not have a backbone
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Biology VocabularyBiology Vocabulary
Word Group 8Word Group 8
INVERTEBRATEINVERTEBRATEAn animal that does not have An animal that does not have
a backbonea backbone
CNIDARIANCNIDARIANAn invertebrate animal that An invertebrate animal that includes jellyfish, coral, and includes jellyfish, coral, and
hydrashydras
RADIAL SYMMETRYRADIAL SYMMETRYAn arrangement of body parts An arrangement of body parts
that resembles the that resembles the arrangement of spokes on a arrangement of spokes on a
wheelwheel
TENTACLETENTACLEAn arm-like body part in An arm-like body part in
invertebrates that is used for invertebrates that is used for capturing preycapturing prey
FLATWORMFLATWORMA simple worm that is flat and A simple worm that is flat and
thinthin
BILATERAL BILATERAL SYMMETRYSYMMETRY
A body plan that consists of A body plan that consists of left and right halves that are left and right halves that are
the samethe same
ROUNDWORMROUNDWORMA worm with a smooth, round A worm with a smooth, round
body and pointed endsbody and pointed ends
SEGMENTED WORMSEGMENTED WORMA worm whose body is divided A worm whose body is divided
into sections such as into sections such as earthworms or leechesearthworms or leeches
MOLLUSKMOLLUSKAn invertebrate divided into An invertebrate divided into three parts: head, body, footthree parts: head, body, foot
ARTHROPODARTHROPODThe largest group of The largest group of
invertebrates which include invertebrates which include insectsinsects
MOLTINGMOLTINGThe process by which an The process by which an
arthropod sheds its external arthropod sheds its external skeletonskeleton
CRUSTACEANCRUSTACEANA class of arthropods that A class of arthropods that includes crabs, lobsters, includes crabs, lobsters,
crayfish, and sow bugs; they crayfish, and sow bugs; they have five pairs of legshave five pairs of legs
ARACHNIDARACHNIDA class of arthropods that A class of arthropods that includes spider, scorpions, includes spider, scorpions,
mites, and ticksmites, and ticks
COMPLETE COMPLETE METAMORPHOSISMETAMORPHOSIS
Changes in form during Changes in form during development in which earlier development in which earlier
stages do not look like the stages do not look like the adultadult
INCOMPLETE INCOMPLETE METAMORPHOSISMETAMORPHOSIS
Changes in form during Changes in form during development in which earlier development in which earlier
stages look like the adultstages look like the adult
PUPAPUPAA stage in the development of A stage in the development of some insects that leads to the some insects that leads to the
adult stageadult stage
ECHINODERMSECHINODERMSInvertebrates which live in the Invertebrates which live in the
ocean and include sea stars, sea ocean and include sea stars, sea urchins, sand dollars, and sea urchins, sand dollars, and sea
cucumberscucumbers
TUBE FOOTTUBE FOOTA small structure used by A small structure used by
echinoderms for movementechinoderms for movement
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