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Assertion : Acraniata is a group of organisms which do not have distinct cranium.
Reason : If includes small marine forms without head.
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

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Correct Answer - B
Acraniata includes marine forms without head or cranium. They lack jaws, vertebral column, paired appendages.

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