A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
Specialization of cells into tissue, organ and organ systems is advantages for the organism. It increase the operational efficiency through division of labour which avoids duplication of work.
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