Question
Which animals make tracheal respiration? Is there a blood-like fluid that participates in this process?

Answers

Insects and arachnids are the arthropod animals that make tracheal respiration. In the body surface of these animals there are many orifices called spiracles that communicate with small tubules, the tracheae, through which air penetrates and carbon dioxide is expelled. The tracheae ramify into tracheoles that reach all tissues of the animal.

In the circulatory system of insects the blood only transports nutrients; gases are independently transported by the tracheal system.   Your Comment






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