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Chap 16
Invertebrates
Cnidarians
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Cnidarian attributes
soft bodies
radial
symmetry
2
germ layers
locomotion:
ripple
in water
cnidarians
jellyfish
sea anemone
corals
jellyfish
free swimmers
tentacles that
sting
and
capture
prey
polyp and medusa
stage
locomotion:
pulsating
their bell
sea anemone
sessile
hydrostatic
skeleton
they can
sting
only
polyp
form
corals
sessile
soft animals with
stone-like coating
polyp
form
exoskeleton
cndarians
have
no true brain
nerve net is a
network of nerves
that connects the brain to the
rest of the body
excretion
and respiration is on
cellular level
cnidocytes
are
stinging cells
of cnidarians
polyp form
cup shaped with a
mouth
and
tentacles
on one end and a basal disc on the other
basal disc
stick disc used for attaching
medusa
form
umbrella shaped
,
free swimmers