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Salt-loving plants (halophytes), such as the seagrasses and mangroves, generally have a lower concentration of water molecules (lower water potential) in their root cells so they can take in water. They maintain lower water potentials in their roots by having higher internal salt concentrations than seawater and by losing water at the leaf surface. Since high internal salt concentrations can be lethal to plant cells, some halophytes can excrete excess salt through their leaves and stems. In other words, they have a lower concentration of water molecules and can take in more water than others.

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16y ago

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