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26 Cards in this Set
- Front
- Back
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Sea stars are under what major class |
Stelleroidea |
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Subclass of true sea stars and sun stars |
Asteroids |
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Subclass composed of brittle and basket starts |
Ophiuroidea |
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Sea urchins and sand dollars are under what class |
Echinoidea |
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Sea cucumbers are in what class |
Holothuroidea |
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What habitat do Echinoderms live in |
Marine |
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What does Echinoderm mean |
Spiny skin |
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What three things characterize echinoderms |
Water vascular system, tube feet, and radial symmetry |
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The body acts live a hub and how many arms or rays project out |
5 |
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What symmetry do echinoderm larvae have |
Bilateral |
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What all is the water vascular system used for |
Gas exchange, feeding, and locomotion |
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What are tube feet called |
Podia |
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When water Is retracted from the podia they do what |
Have a suction effect |
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Difference between asteroids and Ophiuroids |
Way the arms attach to the body Asteroids-are joined Ophiuroids-not joined |
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What do sea stars eat |
Clams, mussels, barnacles, coral, sea urchins, and other sea stars |
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What do the spines of a sea urchin and sand dollar do |
Protect them |
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How are the spines joined to the body of a sea urchin |
Ball joint and muscles |
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What is Echinoidea herbivore or carnivore |
Herbivores |
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How many bands of tube feet do echinoids have |
5 |
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What do a sea cucumbers tentacles do |
Filter seawater for food |
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What happens when a sea star loses a body part |
It regenerates |
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What sea star damages coral reefs |
Crown of thorns sea star |
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What do sea cucumbers do for protection |
They eviscerate their internal organs then regenerate them |
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What are most echinoderms |
Nocturnal |
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Are echinoderms slow or fast |
Slow |
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Feather star class |
Crinoids |
