Double Circulation

Which one of the following vertebrate organs receives the oxygenated blood only?

Study the following table:

Assertion (A): In human heart, deoxygenated blood always flows from right ventricle into pulmonary arch only

Reason (R): Mitral valve present at the base of pulmonary arch prevents the reverse flow of blood

The following characteristic features of circulatory system and heart types were found different animals, $\mathrm{A}$ and $\mathrm{B}$
A) deoxygenated and oxygenated bloods are received by the heart separately but mixed blood will be pumped out from the heart
B) the oxygenated and deoxygenated bloods are received by the heart and the unmixed blood is pumped out separately
i) double circulation and $3$-chambered heart
ii) incomplete double circulation and $4$-chambered heart
iii) double circulation and $4$-chambered heart
iv) incomplete double circulation and $3$-chambered heart

Which of the following condition is correct?

Which of the following order is correct?

The hepatic portal vein drains blood to the liver from;

Hepatic portal vein is found in

Arteries are best defined as the vessels which

A portion of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs and brings oxygenated blood back to the heart is referred as

Which of the following statement is correct ?

What is right for all veins ?

Observe the circulation image above and name the blood vessels A, B and C.

Choose the wrong statement regarding the circulatory system of frog.

The figure shows a schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

In the foetus, the ductus arteriosus connects the

Which of the following organs in vertebrates only receive oxygenated blood?
a. Heart

b. Lungs

c. Liver

d. Spleen

e. Gills

The blood vessel that carries absorbed nutrients such as glucose and amino acids from intestine to liver is