Assertion: cephalopod's tentacle | /r/HasProperty | derived
Facets:
value: from the foot
type: OTHER
value: from the head
type: OTHER
Source sentences:
text: Cephalopod means ‘head-footed’ – the arms and tentacles are derived from the head.
text: In bivalves, the foot is adapted for burrowing into the sediment; in cephalopods it is used for jet propulsion, and the tentacles and arms are derived from the foot.
text: The tentacles of Decapodiformes are thought to be derived from the fourth arm pair of the ancestral coleoid, but the term arms IV is used to refer to the subsequent, ventral arm pair in modern animals (which is evolutionarily the fifth arm pair).