OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sea urchins and ____ ____ are a group of echinoderms that have skeletons made of calcium carbonate plates covered with spines. The sharp spines protect them from predators.
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sea cucumbers
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sand dollars
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brittle stars
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None of the above
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Explanation:
Detailed explanation-1: -Echinoderms should be protected from temperature shock. Individuals from cold deep water should be refrigerated, and even shallow-water, tropical species should be shielded from the sun and held in running seawater or insulated containers until they are processed.
Detailed explanation-2: -The echinoderms (Greek for spiny skin) include sea stars, sea urchins, feather stars, brittle stars and sea cucumbers. All are found in the marine environment in a range of habitats from intertidal surf beaches to the deepest oceans.
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