A fold of dorsal body wall which covers the visceral mass in molluscs, is called

operculum

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mantle

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shell

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none of these

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Solution

The correct option is B mantle
The body of the molluscs consists of the head, muscular foot and visceral mass. The dorsal body wall that folds and covers the visceral mass is called the mantle and the space between the mantle and the visceral hump is called the mantle cavity.

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