Blood transport food and waste materials in our bodies. It consists of plasma as a fluid medium. A pumping organ is required to push the blood around.The blood flows through the chambers of the organ in a specific manner and direction. While flowing throughout the body, blood exert a pressure against the wall or a vessel.
1. Which life process is depicted by the above passage?
a. Respiration
b. Digestion
c. Transportation
d. Excretion
2. Lame the blood pumping organ.
a. Lungs
b. Heart
c. Kidney
d. None of the above
3. Oxygenated blood from lungs enters left atrium through ...........
a. Vena cava
b. Pulmonary artery
c. Pulmonary vein
d. Aorta
4. Deoxygenated blood leaves through the right ventricle through ..........
a. Vena cava
b. Pulmonary artery
c. Pulmonary vein
d. Aorta
5. Which of the following statements is true about heart?
i. It is a hollow muscular organ.
ii. It is a four chambered having three atria and one ventricle.
iii. It has different chambers to prevent the oxygen - rich blood from mixing with the blood containing carbon dioxide.
iv. Arteries always carry blood away from the heart.
a. (i) and (ii)
b. (ii) and (iii)
c. (i),(ii) and (iii)
d. (i),(ii) and (iv)
