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Insects

Insects . Advantages & Limitations of a gas exchange system Pien , Alex & Jess. Advantages. 1. Insects have no transport system, so gases have to go straight to the respiring tissues. 2. Can close their spiracles in hot/ dry conditions to avoid water loss.

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Insects

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  1. Insects Advantages & Limitations of a gas exchange system Pien, Alex & Jess

  2. Advantages • 1. Insects have no transport system, so gases have to go straight to the respiring tissues. • 2. Can close their spiracles in hot/ dry conditions to avoid water loss. • 3. At the end of the tracheoles there is fluid for oxygen to dissolve in so it can diffuse across the membrane.

  3. Limitations • 1. Insects have to be small for the system to be effective. • 2. As an insect increases in size the weight devoted to gas exchange increases, therefore the insect would not be able to move because of the weight of the chiton. • 3. Spiricles can clog up when they are open, which will stop air from going into the body.

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