Freshwater Flatworms Form a Urine That is Typically

Question

Freshwater flatworms form a urine that is typically
A) of high solute concentration, in order to conserve body fluids.
B) of very low volume, in order to conserve body fluids.
C) of high solute concentration and very low volume, in order to conserve body fluids.
D) of high solute concentration and of high volume, matching their normal fluid uptake.
E) of low solute concentration and of high volume, matching their normal fluid uptake.

Accepted Answer

Freshwater flatworms live in an environment where water constantly enters their bodies due to osmosis. To counteract this, they produce urine that is of low solute concentration and of high volume. This helps them to expel the excess water while retaining solutes, thus maintaining their internal balance.