Folic Acid (Cyanocobalamine vit. B₁₂) works in the formation and maturation of RBCs. In its deficiency RBC formation decreases and the formed RBCs will not mature i.e. they will not loose the nucleus and hence remain nucleated and lack haemoglobin. Such RBCs cannot carry oxygen & person suffers from anaemia. Supplementing his diet with folic acid and cobalamine will lead to the increased formation and proper maturation of enucleated RBCs with haemoglobin and eliminate anaemia.

Correct Option: A

Folic Acid (Cyanocobalamine vit. B₁₂) works in the formation and maturation of RBCs. In its deficiency RBC formation decreases and the formed RBCs will not mature i.e. they will not loose the nucleus and hence remain nucleated and lack haemoglobin. Such RBCs cannot carry oxygen & person suffers from anaemia. Supplementing his diet with folic acid and cobalamine will lead to the increased formation and proper maturation of enucleated RBCs with haemoglobin and eliminate anaemia.

Rh factor was discovered by Karl Landsteiner. A child of Rh⁺ man will be Rh⁺ whether the mother is Rh⁺ or Rh^-. If the mother is Rh⁺ then there will be no problem but if mother is Rh^- so when the blood of Rh⁺ child (in womb) mixes with the blood of Rh^- mother then some antibodies in mother’s blood are formed against Rh⁺ factor which coagulate the womb blood causing death. If birth takes place then there is a possibility of child death in early years. This in known as erythroblastosis foetalis. In most cases the Ist pregnancy may succeed but after that it fails.

Correct Option: B

Rh factor was discovered by Karl Landsteiner. A child of Rh⁺ man will be Rh⁺ whether the mother is Rh⁺ or Rh^-. If the mother is Rh⁺ then there will be no problem but if mother is Rh^- so when the blood of Rh⁺ child (in womb) mixes with the blood of Rh^- mother then some antibodies in mother’s blood are formed against Rh⁺ factor which coagulate the womb blood causing death. If birth takes place then there is a possibility of child death in early years. This in known as erythroblastosis foetalis. In most cases the Ist pregnancy may succeed but after that it fails.

The breakdown products of haemoglobin are haem i.e. iron & globin protein which is then converted into yellowish substance bilirubin, extracted by the liver cells from the blood & stored in the form of bile in gall bladder. The more appropriate answer is iron.

Correct Option: B

The breakdown products of haemoglobin are haem i.e. iron & globin protein which is then converted into yellowish substance bilirubin, extracted by the liver cells from the blood & stored in the form of bile in gall bladder. The more appropriate answer is iron.

Pulmonary artery carries the blood from the right ventricle of the heart to the lungs for oxygenation so it carries deoxygenated blood.

Correct Option: A

Pulmonary artery carries the blood from the right ventricle of the heart to the lungs for oxygenation so it carries deoxygenated blood.

Correct Option: B