Some deuterostomes lack a centralized what?
DNA eardrum critical organs permineralization A ruler nervous system communication center respiratory system
A B C D E F G H
All echinoderms are deuterostomes .
Some deuterostomes lack a centralized nervous system
Some deuterostomes lack a centralized what? (A) DNA (B) eardrum (C) critical organs (D) permineralization (E) A ruler (F) nervous system (G) communication center (H) respiratory system