Given below are two statements:
Statement I: A soft and spongy layer of skin forms a mantle over the visceral hump.
Statement II: The space between the calcareous shell and the mantle is called the mantle cavity.
In the light of the above statements choose the most appropriate answer from the options given below :
Text Solution
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The soft and spongy layer of skin that forms a mantle over the visceral hump is a characteristic feature of molluscs. The mantle secretes the outer shell, which is made of calcium carbonate, that covers the soft tissues. The space between the hump and mantle is called the mantle cavity in molluscs. The mantle cavity contains feather-like gills that have respiratory and excretory functions.
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