Which Statement About the Respiratory System of Air-Breathing Insects Is

question 143

Multiple Choice

Which statement about the respiratory system of air-breathing insects is true?

• A) Respiratory gases diffuse through fluid most of the way to and from cells.
• B) Spiracles are gated openings restricted to the thorax region.
• C) Spiracles are permanently open.
• D) Air sacs are gas exchange surfaces.
• E) Spiracles open to allow gas exchange.

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