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← Nature & AnimalsWhich outcome occurs when marine fish excrete excess magnesium sulfate without sufficient water?
A)Enhanced diffusion across the gills
B)Increased concentration in intracellular fluid✓
C)Fluid buildup within the bladder wall
D)Reduced electrolyte reabsorption within kidney
💡 Explanation
When marine fish excrete magnesium sulfate without enough water, the osmotic gradient pulls ions into the tissues because diffusion exceeds excretion capacity, thereby increasing the magnesium concentration within the fish. Therefore the ionic concentration of intracellular fluids rises, rather than diffusion, wall buildup, or reabsorption issues, dependent on a different mechanism.
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