Gas exchange in insects takes place across the epithelium of the tracheae (a system of tubes).The tracheal system connects to the outside air by openings called spiracles.Muscles just inside each spiracle can control the opening to minimize water loss.What would happen if the muscles inside each spiracle were unable to function?

Question

Quizplus · Accepted Answer

If the muscles inside each spiracle were unable to function, the spiracles would remain open and the insect would be unable to control the water loss through transpiration. This would lead to excessive water loss, which can cause dehydration and ultimately death. Therefore, the best choice is B - the spiracles would lock open.

Gas Exchange in Insects Takes Place Across the Epithelium of the Tracheae