No. Oysters do not have a radula
The radula (or some form of the radula) is found in all classes of mollusks except bivalves (organisms with two shells such as clams).
One class of molluscs that lacks a radula is the Bivalvia, which includes clams, mussels, and scallops. Instead of a radula, these organisms have two shells that they use to filter feed. They do not require a radula for scraping or grazing on food sources like other molluscs.
The oyster borer is adapted to bore through the hard shell of oysters using its specialized shell-crushing radula. It secretes an acid to soften the shell and has a muscular foot that helps it bore into the oyster. The oyster borer also has a tube-like body shape that allows it to navigate within the oyster shell.
Yes they do
both slugs and snails use a structure called a radula to eat.
multiple
The radula is a tongue-like organ with rows of teeth that work like files. It is used for scraping and tearing food.
The purpose of the radula of a squid or a snail is similar to that of a tooth. It is part of the equivalent of the tongue, and abrades hard bits from their prey.
used for feeding
yes
Some do but not all.
oysters that are dried