OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All echinoderms have eyespots which can sense light and darkness around them.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Although echinoderms have few well-defined sense organs, they are sensitive to touch and to changes in light intensity, temperature, orientation, and the surrounding water.
Detailed explanation-2: -Echinoderms are named for their spiny skin, which is covered by a thin layer of calcium carbonate plates and spines. Adult echinoderms have radial symmetry, but larvae have bilateral symmetry. Echinoderms have a unique water vascular system, with canals that extend along each body part.
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