Assertion: mollusk's system | /r/HasProperty | developed
Facets:
value: well
type: DEGREE
value: highly
type: DEGREE
Source sentences:
text: The nervous system and the sense of vision are highly developed.
text: All molluscs have a well developed excretory system and it is in the respiratory system that there are great adaptations: in aquatic animals, the exchange of gases is carried out through the surface of the body, as in other lower invertebrates, also developing specialized respiratory organs, called gills (ctenidia), which reach a singular development in nudibranchs; in some terrestrial snails and freshwater it is the mantle that has a similar function to a respiratory lung.
text: Besides a digestive and circulatory system, they also have a well-developed nervous system, and some even have eyes.