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ASSERTION \& REASON
Directions: In the following questions, a statement of assertion is followed by a statement of reason.
Mark the correct choice as:
(1) If both Assertion and Reason are True but Reason is not a correct explanation of the Assertion.
(2) If Assertion is True but the Reason is False.
(3) Assertion is False but Reason is True.
(4) If both Assertion and Reason are True and the Reason is a correct explanation of the Assertion.

Assertion (A): Vertebrate is a sub phylum under the phylum chordata,
Reason (R): Vertebrates have a ventral muscular heart with two, three or four chambers, kidneys for excretion and osmoregulation and paired appendages.
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