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Question
Observe the figure and answer the following questions.
(a) To which phylum do these organisms belong?
(b) Name the substance with which their body is covered.
(c) Name their organs of locomotion.
(a) To which phylum do these organisms belong?
(b) Name the substance with which their body is covered.
(c) Name their organs of locomotion.
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Solution
Answer:
(a) The starfish and the sea urchin shown in the figure belong to the phylum Echinodermata.
(b) The body of an echinoderm animal is covered with calcareous spines or ossicles/plates.
This is the substance covering the body mostly calcium salts and compounds.
(c) Their locomotory organs are tube feet.
(a) The starfish and the sea urchin shown in the figure belong to the phylum Echinodermata.
(b) The body of an echinoderm animal is covered with calcareous spines or ossicles/plates.
This is the substance covering the body mostly calcium salts and compounds.
(c) Their locomotory organs are tube feet.
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