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:In which of the following insects is group instinct…The respiratory structures of insects are?JSS 2 First Term Agricultural Science Lesson Note -…Which of the following pairs are social insects?Define external respiration AND internal respiration…