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Question

Question
Which type of external environment is a saltwater fish best adapted?(1 point)
Responses

hypertonic environment
hypertonic environment

osmotic environment
osmotic environment

isotonic environment
isotonic environment

hypotonic environment
hypotonic environment

Answer 1

A saltwater fish is best adapted to a hypertonic environment. In a hypertonic environment, the concentration of solutes outside the fish (in the seawater) is higher than that inside the fish's body, which leads to water moving out of the fish to equalize the concentration. Saltwater fish compensate for this by actively drinking seawater and excreting excess salts through their gills.