The respiratory organ found in the cockroach is the? by Sunday | Jun 27 | Biology WAEC | 0 comments A. air sac B. trachea C. lung book D. lung E. gill Correct Answer: Option B – trachea Users Also Read These:Organ level of organization in living things is found in?Write the respiratory structure of amoeba, five day…In which of the following vertebrates does the skin…List FOUR characteristics of respiratory surfaces. -…Chronic Respiratory Disease is prevalent in?