Book-lungs are respiratory organs which are found inA. insectsB. crust – InterviewSolution

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1.	Book-lungs are respiratory organs which are found inA. insectsB. crustaceansC. ArachnidsD. Onychores
Answer» Correct Answer - C In arachnids, respriration occurs through book lungs which are connected with with the outside through spiracles or stigmeta.

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