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Question
Why feather star and sea urchin in phylum echinodermata.
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Solution
Phylum Echinodermata includes marine animals having radially symmetrical body with spiny epidermis ( skin ) and tube feet supported by water vascular system for movement and circulation.
Both Feather star and sea urchin show the respective features and hence are included in phylum Echinodermata
Both Feather star and sea urchin show the respective features and hence are included in phylum Echinodermata
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