Assertion :Cells vary greatly in their shape. Reason: The shape of cell does not depend on the function they perform.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Cells vary greatly in their shape. They may be disc like, polygonal, columnar, cuboid, thread like, or even irregular. The shape of the cell may vary with the function they perform e.g., xylem vessels are long as they have to form long water conducting channels. 'Assertion is correct but Reason is incorrect'.

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Assertion

Lithium sulphate does not form alums.

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(e) Assertion is incorrect but reason is correct.

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

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