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| Q. |
Which one of the following is the respiratory pigment in man? |
| A. | Haernocyanin |
| B. | Haemoerythrin |
| C. | b-Carotene |
| D. | Haemoglobin |
| Answer» D. Haemoglobin | |
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Explanation: A respiratory pigment is a molecule, such as hemoglobin in humans, which increases the oxygencarrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, haemocyanin, haemerythrin and chlorocruorin. |
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