This group of deuterostomes is characterized by a water vascular system and calcium carbonate endoskeletons.

Question

Quizplus · Accepted Answer

Echinoderms are the only group of deuterostomes that possess both a water vascular system and a calcium carbonate endoskeleton. Hominins and birds are not deuterostomes, while chondrichthyes are not a part of the same lineage as echinoderms and possess a cartilage skeleton instead of a calcium carbonate one. Chordates are a diverse group of deuterostomes but do not possess a water vascular system or a calcium carbonate endoskeleton.

This Group of Deuterostomes Is Characterized by a Water Vascular