Respuesta :
there will be a more negative water potential in the marine organism, so by osmosis the water will move into the cells from the fresh water, causing swelling.
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The cells will swell and become turgid.
Plants found in marine environments are adapted for osmoregulation in hypertonic environments. If you place this kind of plant in freshwater, that will be hypotonic environment and the plant will swell and become turgid.