Explain the mechanism of gas
exchange in insects
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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).
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Answer:
THE MECHANISM OF GAS EXCHANGE IN INSECTS
Explanation:
Insects breathe through valved openings (spiracles) in their cuticle. Many insects open and close their spiracles in a cyclic pattern (discontinuous gas-exchange cycles, or DGC). ... By keeping the spiracles closed, insects would concentrate CO2 and increase the gradient for outward diffusion of CO2.
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