Assertion: tuatara's eye | /r/HasProperty | photoreceptive
Facets:
value: in these animals
type: OTHER
value: usually
type: DEGREE
Source sentences:
text: Although this "eye" has a small lens and retina and is photoreceptive, it uses a different biochemical method of detecting light than normal vertebrates' rod cells or cone cells.
text: In these animals, the parietal eye is usually photoreceptive: It is helpful only in the perception of light.