Assertion :In chordates a portal system is a complex of veins, which begins in capillaries and ends in capillaries before the blood, which courses through it, returns to the heart. Reason: All vertebrates have a hepatic portal system.

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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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
In chordates, a portal system is a complex of veins, which begins in capillaries and ends in capillaries before the blood, which courses through it is returned to the heart.
All vertebrates have a hepatic portal system. The hepatic portal system is derived from the sub-intestinal system. The hepatic portal vein receives blood from the gut region.
So, the correct answer is option A.

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(c) Assertion is correct, but reason is incorrect
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