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

Gap-fill exercise

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Insects and arachnids the arthropod
animals make tracheal respiration.
the body surface these animals
there many orifices called
that communicate with tubules,
the tracheae, which air
penetrates carbon dioxide is
. The tracheae ramify
tracheoles that reach tissues of the
.

In the circulatory of insects the
only transports nutrients;
are independently transported the
tracheal system.