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Chapter 33 and 34 - Flashcards
chordate pharyngeal slits appear to have functioned first as |
suspension feeding devices |
which extant chordates are postulated to be most like the earliest chordates in appearance |
lancelets |
the feeding mode of the extinct conodonts was |
predation |
ray finned fishes are characterized by |
bony endoskeleton, operculum, and usually a swim bladder |
which are the ONLY extant animals that descended directly from dinosaurs? |
birds |
hominoids, hominins, HOMO, anthropoids, primates- put in order of most inclusive |
primates
anthropoids
hominoids
hominins
Homo |
which cells in sponge are primarily used for trapping and removing food particles from circulating water |
choanocytes |
gastrovascular cavity, polyp stage, medusa stage, cnidocytes, pseudocoelom which are Cnidaria |
gastrovascular cavity
polyp stage
medusa stage
cnidocytes |
which molluscan class includes orgs that are primarily suspension feeders |
bivalves |
which annelid class has parapodia |
polychaeta |
characteristic of nematodes |
they have only longitudinal muscles |
characteristics of arthropods |
protostome development
bilateral symmetry
3 embryonic germ layers |
what distinguishes complete metamorphosis from incomplete in insects? |
radically different appearance b/w adults and earlier life stages |
what is a characteristic of adult echinoderms? |
secondary radial symmetry |
protostomes that have open circulatory system and exoskeleton of chitin=phylum? |
ARTHROPODA |
protostomes with drape of tissue that may secrete a shell=which phylum? |
Mollusca
|
diploblastic |
has 2 germ layers-endoderm and ectoderm |
diplostic phylum of aquatic predators |
Cnidaria |
Deuterostomes that have an endoskeleton are part of which phylum |
Echinodermata |
radula is present in members of which classes |
CHITONS
GASTROPODS
CEPHALOPODS |
they may use a gastrovascular cavity as a hydrostatic skeleton |
Phylum Cnidaria |