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Exam II Bio II

Invertebrates III

QuestionAnswer
Key features of Annelida segmented worms, marine, fresh water, terrestrial ,true coelomates
Key features of Oligochaetes few hairs, velvet worms, reduced head structures, no parapodia, hermaphrodites
Key features of Polycheates most marine, parapodia on each segmented movement and oxygen absorption, defined head
Key features of leeches marine, predatory parasites, medicinal uses, release enzymes to digest skin and stop blood from clotting.
Key features of nematodes Extremely abundant, not segmented, pseudocoelem, covered in cuticle that sheds and regrows, longitudinal muscles, sexual reproduction with resistant zygotes, many parasites, can alter host behavior
Key features of Arthropods segmented, coelomates, exoskeleton, jointed appendages, found everywhere, most successful phyla,outer chitinous cuticle molts, terrestrial appeared 450mya, diverse/complex sensory organs, open circulatory system, breath through pores, gills,and book lung
Key features of Cheliceraforms Spider, scorpions, simple eye, chelicera, 6 pairs of appendages, most use poison, tracheal systems, book lungs
What are chelicera? pincher like feeding apparatus
Key features of Myriapods centipedes, millipedes, terrestrial, antennae, mandibles, and 2 other appendages, excrete cyanide gas for defense
What makes millipedes diplopoda? two pairs of legs per segmented
Key features of Chilopoda predators, centipedes, one pair of legs per segment, no mandibles (modified legs)
Created by: MichaelaMH
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