Assertion: sea urchin's test | /r/CapableOf | accommodate the water-vascular system
Facets:
Source sentences:
text: In many species the hollow, slightly elongated test (internal skeleton), which accommodates the water-vascular system, is…
text: In many species the hollow, slightly elongated test (internal skeleton), which accommodates the water-vascular system, is symmetrically notched on the edge or has narrow perforations (lunules).