$(a)$ Draw a sectional view of the human heart and label the following parts on it:
Pulmonary artery,right atrium,left ventricle,septum.
$(b)$ What do the following transport?
$(i)$ Xylem
$(ii)$ Phloem
$(iii)$ Pulmonary vein
$(iv)$ Vena cava

(N/A) The sectional view of the human heart shows the four chambers and major blood vessels. The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs. The right atrium receives deoxygenated blood from the body. The left ventricle pumps oxygenated blood to the rest of the body. The septum separates the right and left sides of the heart to prevent the mixing of oxygenated and deoxygenated blood.
$(b)$ $(i)$ Xylem: Transports water and dissolved minerals from the roots to the leaves.
$(ii)$ Phloem: Transports food (sucrose) synthesized in the leaves to other parts of the plant (translocation).
$(iii)$ Pulmonary vein: Transports oxygenated blood from the lungs to the left atrium of the heart.
$(iv)$ Vena cava: Transports deoxygenated blood from the body tissues to the right atrium of the heart.