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Chapter 33 and 34 - Flashcards

chordate pharyngeal slits appear to have functioned first as
suspension feeding devices
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which extant chordates are postulated to be most like the earliest chordates in appearance
lancelets
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the feeding mode of the extinct conodonts was
predation
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ray finned fishes are characterized by
bony endoskeleton, operculum, and usually a swim bladder
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which are the ONLY extant animals that descended directly from dinosaurs?
birds
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hominoids, hominins, HOMO, anthropoids, primates- put in order of most inclusive
primates anthropoids hominoids hominins Homo
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which cells in sponge are primarily used for trapping and removing food particles from circulating water
choanocytes
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gastrovascular cavity, polyp stage, medusa stage, cnidocytes, pseudocoelom which are Cnidaria
gastrovascular cavity polyp stage medusa stage cnidocytes
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which molluscan class includes orgs that are primarily suspension feeders
bivalves
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which annelid class has parapodia
polychaeta
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characteristic of nematodes
they have only longitudinal muscles
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characteristics of arthropods
protostome development bilateral symmetry 3 embryonic germ layers
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what distinguishes complete metamorphosis from incomplete in insects?
radically different appearance b/w adults and earlier life stages
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what is a characteristic of adult echinoderms?
secondary radial symmetry
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protostomes that have open circulatory system and exoskeleton of chitin=phylum?
ARTHROPODA
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protostomes with drape of tissue that may secrete a shell=which phylum?
Mollusca
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diploblastic
has 2 germ layers-endoderm and ectoderm
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diplostic phylum of aquatic predators
Cnidaria
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Deuterostomes that have an endoskeleton are part of which phylum
Echinodermata
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radula is present in members of which classes
CHITONS GASTROPODS CEPHALOPODS
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they may use a gastrovascular cavity as a hydrostatic skeleton
Phylum Cnidaria
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