Haemoglobin is the respiratory pigment present in red blood corpuscles which has a very high affinity for oxygen. Its main function is to take up oxygen from the air in the lungs and carry it to tissues which are deficient in oxygen.

If there is a deficiency of haemoglobin in our bodies, the oxygen transport would be severely affected. The respiratory pigment would not be able to carry sufficient oxygen from the lungs to all the body tissues efficiently.

As a result, the body tissues would not receive adequate oxygen supply. Since diffusion pressure alone cannot take care of oxygen delivery to all parts of the body in large animals like human beings, the deficiency of haemoglobin would lead to insufficient oxygen reaching the tissues. This would affect the energy generation process in cells, as oxygen is required for chemical reactions that produce energy.