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Question
Assertion :Mantle refers to body wall of mollusca. Reason: Epidermis of matle secrete chitin to form shell of mollusca.
Assertion :Mantle refers to body wall of mollusca. Reason: Epidermis of matle secrete chitin to form shell of mollusca.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself. In many species of molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell.
So the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.
The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself. In many species of molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell.
So the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.
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