What do you want to compare with the transportation in blood vessels in man? (AS6)

a. Transportation of blood in blood vessels can be compared with the transportation of water by xylem and food material by phloem in plants.

b. Heart pumps oxygenated blood into aorta. Aorta divides into arteries and arterioles and distributes oxygenated blood to all the body parts and ends with capillaries.

c. Veins begin with capillaries. These form into venues, these join to form into veins.

d. All these veins join to form superior and inferior vena cava. These large veins collect deoxygenated blood from body parts and bring to the heart.

e. Heart pumps deoxygenated blood to lungs by pulmonary artery for oxygenation and this oxygenated blood is sent to heart by pulmonary veins to heart.

f. The blood transportation is compared to transportation in plants.

g. Similarly root hairs absorb water and mineral salts from soil.

h. The water then enters into xylem and transported to the stem and leaves by transpiration pull.

i. From the leaves the water lost in the form of water vapours. Loss of water is called transpiration.

j. Transpiration promotes absorption of water by roots.