Question

Which blood cells transport oxygen?

• A. Red
• B. White
• C. Both A and B
• D. None of the above

Answer 1

The correct option is A Red

Erythrocytes or red blood cells (RBC) are the most abundant of all the cells in blood. A healthy adult man has, on an average, 5 millions to 5.5 millions of RBCs per cubic mm of blood. RBCs are formed in the red bone marrow in the adults. RBCs are devoid of nucleus in most of the mammals and are biconcave in shape. They have a red coloured, iron containing complex protein called haemoglobin, hence the colour and name of these cells. These molecules play a significant role in transport of respiratory gases like oxygen and carbon dioxide.

Hence the correct option is A.