(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.
The paramecium use their oral groove's cilia to sweep down food particles into the mouth pore. The mouth pore transferees the food molecules into the gullet, which forms two food vacuoles that circulate around the cytoplasm. Organic molecules are then digested and absorbed. Molecules that are not digested.