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13 Cards in this Set
- Front
- Back
An internal skeleton is called an
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endoskeleton
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What are the five features that characterize echinoderms?
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spiny skin
internal skeleton a water vascular system suctional cup-like structures called tube feet five-part radial symmetry |
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What functions does the water vascular system carry out in echinoderms?
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respiration, circulation, movement
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what is the description of feeding and body of sea urchins and sand dollars?
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many are detritivores or grazers;
disk-shaped |
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what is the description of feeding and body of brittle stars?
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filter feeders and detritivores ;
slender, flexible arms |
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what is the description of feeding and body of sea cucumbers?
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detritus feeders
look like warty , moving pickles |
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what is the description of feeding and body of sea stars?
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carnivores ;
red, poofy |
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what is the description of feeding and body of sea lilies and feather stars?
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filter- feed
long, feathery arms and attached to the ocean bottom by a stalk |
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how do sand dollars defend themselves?
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burrow under layers of sand or mud
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when a brittle star is attacked , it sheds one or more arms,. how does this help the echinoderm?
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distracts the predator
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where are most sea cucumbers found?
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deep-sea floor
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what happens if a sea star is pulled into pieces?
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each piece will grow into a new animal
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where do many feather stars live?
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coral reefs
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