Structures responsible for movement in an Echinoderm: Post author By Anonymous Post date February 24, 2025 Related Posts:Structures responsible for movement in an Echinoderm:Structures responsible for movement in an Echinoderm:Which echinoderm group lacks "arms"? ← The Phylum Echinodermata exhibit this type of symmetry as ad… → Grasshoppers have a __________ for sound wave reception.