The respiratory structures of insects are? by Sunday | Apr 26 | Biology NECO | 0 comments A. body surfaces B. gills C. kidneys D. lung E. tracheae Correct Answer: Option E – tracheae Users Also Read These:In the mammalian respiratory system; exchange of…Which of the following has the most primitive…In birds, loss of appetite, respiratory difficulties…SS 2 Second Term Agricultural Science Lesson Note -…Which of the following structures is used for…