Question

what is the role of the haemoglobin

Answer 1

Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues to the lungs. ... Hemoglobinalso plays an important role in maintaining the shape of the red blood cells.
Hope it'd helped you
pls mark as Brainliest:-)

Answer 2

Haemoglobin present in the RBCs efficiently carries oxygen rich blood from the lungs to the body tissues and helps in bringing back the carbon dioxide rich blood to the lungs.