A

David

Darling

radula

The radula is a structure found in the mouth of some molluscs which is used to rasp food. The radula consists of a tongue-like strip of horny material (modified epithelium), which bears many rows of chitinous or horny teeth. In slugs and snails, it is used to rasp off pieces of leafy food. In some marine molluscs, it is modified for boring or scraping.