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Question

Which of the following is not a characteristic of good respiratory surface?


A
Thin and moist
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B
Large surface area
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C
Close to oxygen and gas transport.
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D
Thick and dry surface
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Solution

The correct option is D Thick and dry surface
The characteristics of a respiratory surface are thin walls, a moist inner surface, a huge combined surface area, a rich blood supply each alveolus is sounded by capillaries. Surfaces which dries out easily, thick and easily damaged are not a characteristic of good respiratory surface. 
Therefore, the correct answer is option D.

Biology

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