Assertion: sea urchin | /r/HasAspect | separate male and female sexes
Facets:
Source sentences:
text: Sea urchins are dioecious, having separate male and female sexes, although no distinguishing features are visible externally.
text: Sea urchins are dioecious, having separate male and female sexes, although no distinguishing features are visible externally.
text: Sea urchins are dioecious, having separate male and female sexes, although distinguishing the two is not easy, except for their locations on the sea bottom.