The Osmoregulatory/excretory System of a Freshwater Flatworm is Based on the Operation

Question

The osmoregulatory/excretory system of a freshwater flatworm is based on the operation of
A) protonephridia.
B) metanephridia.
C) Malpighian tubules.
D) nephrons.
E) ananephredia.

Accepted Answer

Freshwater flatworms use protonephridia to regulate their osmotic balance and excrete waste products. Protonephridia are a network of tubules with flame cells that filter excess water and waste from the flatworm's body. The filtrate is then released through excretory pores.