Q75 of 367 Page 75

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

Phloem is a vascular tissue which transports food materials from leaves to the other parts of the plant.

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73

Which blood vessel does not carry any carbon dioxide ?

 74

It has been found that people living in very high mountains have many more red corpuscles in their blood than people living in plains. Which one of the following best accounts for this phenomenon?

 76

Which of the following has a three-chambered heart?

 77

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