Which of the following structures is used for respiration in insects? by Sunday | Nov 21 | Biology WAEC | 0 comments A. Lungs B. Thorax C. Cuticle D. Spiracles Correct Answer: Option D D. Spiracles Users Also Read These:Which of the following insects transmits swollen…The following are social insects except?JSS 2 First Term Agricultural Science Lesson Note -…Which of the following structures is not involved in…Which of the following is NOT characteristic of…