Biology, 31.07.2019 15:00 jasonoliva13
In insects, what is the adaptive significance of spiracles? in insects, what is the adaptive significance of spiracles? they dilate and constrict during flight or other types of movement, functioning as a "breathing" mechanism. they close off tracheae to minimize water loss. they are thin and highly branched, offering a large surface area for gas exchange. they open into the body cavity, allowing direct contact between hemolymph and tissues.
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