Assertion: gastropod's radula | /r/HasProperty | unique
Facets:
value: to the molluscs
type: OTHER
value: to molluscs
type: TRANSITIVE-OBJECT
Source sentences:
text: The radula is unique to the molluscs and has no equivalent in any other animal.
text: The radula is unique to the molluscs, and is found in every class of mollusc except the bivalves, who use instead cilia,
text: The radula, which is located inside the mouth, is a feeding structure that is unique to molluscs.