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Mouth Annus Located Echinodermata Ventral.  Anus Dorsal

For echinoderms, the mouth is on the ventral side, and the anus is on the dorsal side.

In echinodermata, the mouth is located ventrally, and the anus is located dorsally.

Front where are mouth and annus located in echinodermata
Back MOUTH ----- VENTRAL. 
ANUS--------- DORSAL.

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