The osmoregulatory/excretory system of an insect is based on the operation of Naim 02:25 AP Biology Chapter 32 The osmoregulatory/excretory system of an insect is based on the operation of A) metanephridia. B) ananephredia. C) Malpighian tubules. D) nephrons. E) protonephridia. Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+