Assertion: Organisms are made up of cells.
Reason: Cells are the structural unit of living organisms. $A$ cell keeps its chemical composition steady within its boundary.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

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$(a)$ Rudolf Virchow
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