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Though human are heterogeneous in ex...

Though human are heterogeneous in external dimesion and colour . The colour of blood is identical . Give reason .

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All human beings have blood which is of uniform compostion . Blood is red in colour due to presence of red blood cells containing the respiratory pigment haemoglobin . Therefore Colour of blood will be identical in all human beings irrespective of external appearance .
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Knowledge Check

  • NaCl gives a golden yellow colour to the Bunsen flame which is due to.

    A
    Sublimation of metallic Na to give yellow vapour
    B
    Emission of excess energy absorbed as a radiation in the visible region.
    C
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    D
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