Which of the following statements comparing the mammalian respiratory system with the arthropod tracheal system is FALSE?

The statement regarding the closed circulatory system being adjacent to the gas exchange surface in both mammalian and arthropod respiratory systems is false because mammals have a closed circulatory system consisting of blood vessels that transport oxygen and carbon dioxide, while arthropods, such as insects, typically possess an open circulatory system that does not transport gases as part of the blood. Instead, arthropods rely on a system of tracheae that directly delivers oxygen to tissues and removes carbon dioxide without the need for a blood medium. This difference in circulatory systems illustrates a distinct operational mechanism for gas exchange between these two groups, leading to the conclusion that the presence of a closed circulatory system adjacent to the gas exchange surfaces does not apply to arthropods.

In contrast, the other statements accurately reflect the similarities and differences between the two respiratory systems. Both systems have highly branched structures that facilitate gas exchange, which is essential for efficiently supplying oxygen and removing carbon dioxide. The tracheal system of arthropods is indeed more widespread within their bodies compared to the localized respiratory systems of mammals, which are concentrated in the lungs. Lastly, both respiratory systems represent adaptations to terrestrial life, emphasizing the need for maintaining a moist environment for gas exchange, highlighting their evolution