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13 Cards in this Set

  • Front
  • Back
An internal skeleton is called an
endoskeleton
What are the five features that characterize echinoderms?
spiny skin

internal skeleton

a water vascular system

suctional cup-like structures called tube feet

five-part radial symmetry
What functions does the water vascular system carry out in echinoderms?
respiration, circulation, movement
what is the description of feeding and body of sea urchins and sand dollars?
many are detritivores or grazers;

disk-shaped
what is the description of feeding and body of brittle stars?
filter feeders and detritivores ;

slender, flexible arms
what is the description of feeding and body of sea cucumbers?
detritus feeders

look like warty , moving pickles
what is the description of feeding and body of sea stars?
carnivores ;

red, poofy
what is the description of feeding and body of sea lilies and feather stars?
filter- feed


long, feathery arms and attached to the ocean bottom by a stalk
how do sand dollars defend themselves?
burrow under layers of sand or mud
when a brittle star is attacked , it sheds one or more arms,. how does this help the echinoderm?
distracts the predator
where are most sea cucumbers found?
deep-sea floor
what happens if a sea star is pulled into pieces?
each piece will grow into a new animal
where do many feather stars live?
coral reefs