Which species doesn't have an anterior or posterior end?\nOptions:\n- (A) animals\n- (B) peachleaf willow\n- (C) Rabbits\n- (D) Blowfish\n- (E) fur seals\n- (F) Snakes\n- (G) Echinoderms\n- (H) alpacas
Reason slowly and give your answer.
(G)
Adult echinoderms have radial symmetry.

Animals with radial symmetry lack an anterior and posterior end.

Adult echinoderms lack an anterior and posterior end.

.

The final answer: (G)