An excretory system that is partly based on the filtration of ...

[j_sun]

An excretory system that is partly based on the filtration of fluid under high hydrostatic pressure is the
A) flame bulb system of flatworms.
B) protonephridia of rotifers.
C) metanephridia of earthworms.
D) Malpighian tubules of insects.
E) kidneys of vertebrates.

[sammy]

I remember it was E

[j_sun]

Thanks dude! Marking this solved.