In Mollusca : 1. The posterior head region has sensory tentacles. 2. The mouth contains a file-like rasping organ for feeding 3. The file-like rasping organ for feeding is called morula Regarding 1,2 and 3:
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3. The file-like rasping organ for feeding is called morula
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3..the file like rasping organ for feeding is called morula regarding......... ,,
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