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5 Cards in this Set
- Front
- Back
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Phylum Echinodermata
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-Marine, spiny-skinned animals
-Most adults are radially symmetric -All have endoskeleton -Thin epiderms -Body 5-parted or in multiples of 5 |
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Class Asteroidea
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Starfish
-Carnivores -Tube feet used for locomotion and exerting pressure on prey -Mouth is ventral, central disc is large, arms are usually stout |
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Class Ophiuroidea
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Brittle Stars
-Small central disc, arms are independent of disc -Tube feet used in gatherine food |
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Class Echinoidea
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Sea Urchins and Sand Dollars
-Tube feet for locomotion -Urchins have prominent spines and are herbivores -Dollars are flattened and are deposit feeders |
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Class Holothuroidea
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Sea Cucumbers
-Burrow in sediment and ingest it -Detritivores -Skeleton is reduced to small spicules contained in leathery empidermis |
