Assertion: sponge | /r/CapableOf | secrete exoskeleton
Facets:
Source sentences:
text: Some sponges also secrete exoskeletons that lie completely outside their organic components.
text: Some sponges also secrete exoskeletons that lie completely outside their organic components whilst others, e.g. Spongia officinalis, the bath sponge, have no spicules at all.