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:JSS 2 First Term Agricultural Science Lesson Note -…Which of the following insects transmits swollen…In insects, the structures that perform the same…In the diagram, the structures used for offense and…Siphons and gills are structures in aquatic…