Which physiological response occurs when a freshwater fish is transferred to saltwater?

💡 Explanation

When a freshwater fish enters saltwater, the external environment becomes hypertonic, causing osmotic water loss through the gills because water moves from higher to lower concentration. Therefore, secretion by chloride cells decreases, rather than increased urine, absorption, or uptake, which are strategies for freshwater adaptation.

• Which outcome occurs when a fish fills its swim bladder with CO₂ at depth?
• Which developmental failure results when juvenile hormone (JH) remains elevated during the pupal stage in holometabolous insects?
• Which risk increases when reduced air sac pressure causes asynchronous breathing during thermal soaring?
• Which process enables arctic foxes to produce high-frequency shivers as they encounter ice water?
• Which outcome occurs when excessive heat inhibits transpiration?
• Which behavior results for bees when a previously successful foraging site near an electromagnetic interference source becomes undetectable during the waggle dance?