Which of the Following Is True Regarding Some Insect Tracheal

question 45

Multiple Choice

Which of the following is true regarding some insect tracheal systems?

• A) ​They are associated with the blood circulatory system.
• B) They excrete body wastes as well as transport gases.
• C) Their spiracles can become clogged by spraying them with oil.
• D) The tracheal tubes are continually open in large terrestrial insects.
• E) They contain respiratory pigments to enhance oxygen transport.

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