what have a unique water vascular system with tube feet?
h2o insects sea urchins bushes Most plants Conifers orchids humans
A B C D E F G H
Starfish and sea urchins are also echinoderms.
sea urchins have a unique water vascular system with tube feet
what have a unique water vascular system with tube feet? (A) h2o (B) insects (C) sea urchins (D) bushes (E) Most plants (F) Conifers (G) orchids (H) humans