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Multiple Choice
Which of the following respiratory systems is not closely associated with the blood supply?
A
Tracheal system in insects
B
Alveolar system in mammals
C
Gill system in fish
D
Parabronchial system in birds
Verified step by step guidance
1
Understand the function of each respiratory system listed: The tracheal system in insects, the alveolar system in mammals, the gill system in fish, and the parabronchial system in birds.
Recognize that the tracheal system in insects is unique because it delivers oxygen directly to tissues without relying on a circulatory system to transport gases.
Compare this with the other systems: The alveolar system in mammals, gill system in fish, and parabronchial system in birds all involve close association with the blood supply to facilitate gas exchange.
Identify that the tracheal system in insects does not involve blood in the process of gas exchange, unlike the other systems which use blood to transport oxygen and carbon dioxide.
Conclude that the tracheal system in insects is the respiratory system not closely associated with the blood supply, as it operates independently of the circulatory system.