Question

Which of the following regulatory mechanisms is correctly matched to the environment?

A) Freshwater fish excrete hypertonic urine in large volumes to maintain body osmolarity.
B) Halophiles maintain a constant influx of solutes through their cell membranes to maintain osmolarity.
C) Protists use contractile vacuoles to pump water into the cell to maintain osmolarity.
D) Stomata are located on the top of the leaf on raised dimples on the leaf to limit evapotranspiration.