Worms and friends marine

eshapeesha's version from 2015-04-21 00:52


Question Answer
spongesno true tissue, sessile
osculumbig opening to let water out, part of sponge body
ostialittle pores that draw water in, sponge body
collar cellscreate current for feeding, sponge body
spiculeson sponges, structures for support and defense
spongintough, elastic fibers of protein
cnidarianscarnivores, true tissues, no organs, radial symmetry
2 forms of cnidarianspolyp and medusa
polypsac like attached stage (sessile)
medusabell like jelly
nematocystsstinging cells to capture prey
blind gutmouth, no anus on medusa
cnidarian tissue layersgastrodermis, epidermis, mesoglea
hydrozoacolonial, polyp and medusa stage, siphonophores
siphonophoredrifting colonial hydrozoans
scyphozoanot colonial, dominant medusa stage
cubozoasea wasp, box jelly, dangerous.
anthazoamost abundant cnidarian, only polyps. inc anemonies, corals
ctenophora aka comb jelliesradial symmetry, cetene rows, colloblasts, 3 tissue layers (no mesoglea)
flatworms symmetrybilateral
flatwormstissues organized into true organs and organ systems, central nervous system, 3 tissue layers, hermaphroditic
ribbon wormscirculatory system, round worms w hydrostatic skeleton, parasitic
segmented wormssegmentation, polychaeta
polychaetamost marine worms, have parapodia
parapodiaextentions w bristles called setae. for locomotion and respiration

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