You examine an animal and find that it has an excretory tubule with a closed proximal end immersed in hemolymph and a distal end that empties into the gut. You correctly identify this tubule as a ____.
A) nephron
B) hepatic tubule
C) metanephridium
D) Malpighian tubule
E) protonephridium

Question

Quizplus · Accepted Answer

Malpighian tubules are excretory structures in arthropods, like insects and spiders, that have a closed proximal end immersed in hemolymph (the invertebrate blood equivalent) and a distal end that empties into the gut, facilitating the removal of waste products from the body.

You Examine an Animal and Find That It Has an Excretory