The portal system seen in all vertebrates is

Hepatic

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Renal

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Pulmonary

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Both A and B

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Solution

The correct option is D Both A and B
The system which directs the blood from the gastrointestinal tract to the liver before entering the heart is known as portal system. It starts and end with the capillaries.
The portal system of liver is known as hepatic portal system. It carries the nutrient rich blood from the visceral parts to the liver for processing. Liver removes the toxic substances from the blood.
The portal system in the kidney is known as renal portal system. It is formed by the union of femoral and sciatic nerve. It opens into the kidney by capillaries. Kidney removes the metabolic waste from the blood of the portal system.
So, the correct answer is option D.

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Similar questions

Q. The renal portal system of vertebrates is significant for

Q. 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.

Assertion (A): A complex of veins beginning and ending in capillaries through which blood circulates before returning to the heart is called a portal system.

Reason (R): All mammals have a hepatic portal system.

Q. The table shows the functions of portal system in a frog. Choose the best option given below.

I.Portal System	II.Function
A) Renal portal system	Collects blood from all parts of the body
B) Renal portal system	Carries blood from hind limbs to kidneys
C) Hepatic portal system	Carries blood from liver to alimentary canal

Assertion (A): A complex of blood vessels beginning and ending in capillaries through which blood circulates before returning to the heart is called a portal system.

Reason (R): All mammals have a hepatic portal system.

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