By altering function and excreting a huge volume of dilute urine, the salmon’s kidney is able to adapt with the change from saltwater to freshwater.
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Answer:
The correct answer would be osmosis.
Explanation:
When salmon are in freshwater, they are in the hypertonic condition to their surroundings because of more water outside the body cells than inside. The water moves inside the body cells due to osmosis.
So the salmon suffer from water lodging and low salt in the body. It detected by the hypothalamus and regulate pituitary for secreting the hormone. The hormone results in the transport of ions to occur within the gill cells while they absorb salts across the gill cells which ultimately exchange sodium and chlorine ions against the concentration gradients.
Thus, the correct answer would be osmosis.
