What do the following transport?
(i) Xylem (ii) Phloem (iii) Pulmonary vein (iv) Vena cava

Q. Which of the following structures would be expected to contain oxygen-rich blood?
I. Pulmonary artery
II. Pulmonary vein
Ill. Superior vena cava

Q. Mark the odd one in each of the following series:
Thoracic duct, aorta, pulmonary vein, vena cava.

Q. Look at the figure given below and label it correctly:

Body tissues, Pulmonary vein, Lungs, Brain tissues, Deoxygenated blood, Aorta, Superior vena cava, Oxygenated blood, Inferior vena cava, Pulmonary artery

figure

Q. Which of the following events do not occur during joint diastole?

(I) All four–chambers are in relaxed state

(II) Tricuspid and bicuspid are open

(III) Semilunar valves are closed

(IV) Blood from the pulmonary veins and vena cava flows into the left and right ventricles, respectively through the left and right atria