(of fish) migrating from salt water to spawn in fresh water, as salmon of the genera Salmo and Oncorhynchus (distinguished from catadromous). Origin of anadromous.
A: A snail scrapes its food, rather than chews it like we humans do. A flexible structure called the radula in the snailâs mouth is lined with neatly organized rows and columns of tiny tooth-like projections. The snail moves its radula over the food, scrapes off bits of it, and swallows.
Radula specific to snails (from Latin radere - to scrape) Most Mollusks (with the exception of bivalves) have a specialized feeding organ within the mouth called the radula. The mouth opens into a pocket-like buccal cavity. Inside this cavity is the radula sac which protects the mouth when the radula is not in use. Supporting the radula is a structure of cartilage called the odontophore. Controlled by muscles, it is capable of being thrust forward and retracted in a rhythmic motion for feeding and retracted when finished. As for the radula itself.