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← Nature & AnimalsWhich consequence results when excessive freshwater influx overwhelms a swordtail fish?
A)Net water efflux increases sharply
B)Active cellular extrusion of sodium
C)Dramatic chloride cell proliferation occurs
D)Reduced active ion uptake manifests rapidly✓
💡 Explanation
Reduced active ion uptake precipitates because the influx of freshwater dilutes blood, increasing urine output via osmoregulation; therefore, the ion loss accelerates, rapidly inducing hyponatremia rather than water efflux or cellular chloride mechanisms appropriate osmotically in saltwater.
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