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प्रश्न
State briefly, the difference between white blood cells and the red blood cells.
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उत्तर
| RBC | WBC |
| They do not have nucleus atmaturity | They have a large characteristic nucleus. |
| They possess haemoglobin and are red | They are colourless as they have no pigment |
| They help in transport of respiratory gases | They help in defence mechanism |
| Life span is 120 days | WBC have a short life.span of 5 to 20 days. |
| They are about 5 million/mm3 of blood. | They are about 7000/mm3 of blood. |
| In the embryonic stage the RBC are formed in the liver and spleen. But after birth, they are formed in the red bone marrow. | WBC are formed in the red bone marrow. |
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