explain the mechanism of gas exchange in insects
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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).
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mechanism of gaseous exchange in insects
insects have a type of respiration in their body called as tracheal respiration which has internal tubes ,the finer branches may extends to all parts of teh body & may be intracellular in muscle fibres
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