Question R9 Q19 - NSB 2012

Which of the following is true regarding osmoregulation in a freshwater fish?

W) Osmotic water loss occurs over body surface and via gills

X) Nitrogenous wastes are excreted primarily in the form of uric acid

Y) Copious amount of urine hypotonic to the blood is excreted

Z) Excess salt is excreted from gills

Science Bowl Question