Red colour of blood is due to presence of - a. Plasma b. Haemoglobin c. RBC d. Cytoplasm
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Answer:haemoglobin
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Answer: haemoglobin
Haemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Hemoglobin in blood carries oxygen from the lungs or gills to the rest of the body.
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