Question

Explain how exchange of gases takes place in
insects.
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Answer 1

Answer:

Gases move by diffusion within the tracheal system. When the insect is less active the ends of the tracheoles contain fluid. It is where the fluid and gas meet (= the fluid/gas interface), that exchange of gases occurs (oxygen is taken up, carbon dioxide is given off).

Answer 2

Answer:

,

Explanation:

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