Q60 of 367 Page 75

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

Which blood cells (WBC), a component of blood, protect us from diseases. WBC make a chemical, antibodies which help to fight against infection.

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How is food transported in plants?

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One of the following does not have a nucleus. This one is :

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

 62

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