Which one of the following is exclusively found only in Mollusca?
A
Sensory tentacles
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B
Operculum
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C
Shell
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D
Radula
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Solution
The correct option is D Radula The radula is a rasping organ found only in Mollusca. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the oesophagus.