. Insects have a network of air tubes for gaseous exchange called


a) gills.

b) spiracles.

c) tracheae.

d) alveoli.

 

Best Answer

c) tracheae.

Explanation: Insects have a network of air tubes called tracheae for gas exchange. Oxygen rich air rushes through spiracles into the tracheal tubes, diffuses into the

body tissue, and reaches every cell of the body. Similarly, carbon dioxide from the cells goes into the tracheal tubes and moves out through spiracles. These air tubes or tracheae are found only in insects and not in any other group of animals.

 

 

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