Answer:
The radula is a special
rasping structure found in many molluscs. It is used to scrape and scratch the
food and to create depressions in rocks which molluscs use as their habitat.
The radula bears
many rows of tiny teeth that are replaced as they wear down. e.g., Limpetis a
marine invertebrate that uses its radula for creating home by boring a shallow
hole in the rock.
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