Q61 of 367 Page 75

An animal in which the oxygenation of blood does not take place in the lungs is :

Fish has gills to oxygenated its blood. The oxygenated blood is supplied from the gills to the body.

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The component 'of blood which makes chemicals known as antibodies is :

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Which of the following carries substances upwards as well as downwards in a plt ?

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One of the following is not a constituent of blood. This one is :