Q77 of 367 Page 75

In which of the following are the largest amounts of nitrogen excreted from a mammalian body ?

Kidneys excrete the nitrogenous waste like urea from the body in the form of urine.

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The phloem tissue in plants is responsible for the transport of :

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Which of the following has a three-chambered heart?

 78

Which one of the following has cytoplasm but no nucleus :

 79

The process of carrying food from the leaves to other parts of a plant is called :