Blume Ch 13.4 Echinoderms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what do Echinoderms feed on | plants and animals
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| what is a water-vascular system | a network of water-filled canals
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| what are tube feet | hollow thin tubes
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| what animals are in the Echinoderms group | bristle stars, sea stars, sand dollars, sea urchins, sea cucumbers
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| how do sea stars reproduce | sexually
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| how do the bristlie stars' have an advantage to predators | when the predator is trying to bite of one arm it can swim away because its arms are fragile and break of easily
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| what does Echinoderms mean | spiny skin
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| what are the bristlie stars' tube feet used for | moving particles of food through their mouth
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| what are sea urchins and sand dollars covered with | spines
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| what shape are the sea urchins and the sand dollars | disk or globe- shaped
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| do sea urchins or sand dollars have a five-pointed pattern on their surface | sand dollars
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| what don't sand dollars and sea urchins have | arms
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| what do the sacs contain on the sea urchin | toxic fluid that is injected into predators
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| how do the spines benefit the sea urchins and the sand dollars | they help them move through the water and help them burrow
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| sea cucumbers have what type of covering | leathery
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| where are the sea cucumbers tentacles located | around their mouths and on rows of their tube feet on their upper and lower surfaces
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| what do sea cucumbers eat | planton!! and detritus
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