Question

respiratory surface of animals must always be moist . why?

Answer 1

The respiratory surface is moist in order to facilitate the exchange of gases - Oxygen and Carbon dioxide. ... These gases can be transported across the cell membrane only, when dissolved in water. Therefore , Respiratory system must beMoist.

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Answer 2

Answer:

Explanation:

The respiratory surface of animals must always be moist for better diffusion of gases. Both oxygen and carbon-dioxide gets dissolved in water quickly and their diffusion becomes easier & quicker. This is the reason for moist respiratory surfaces.