How is the pressure potential is both positive and negative?? Give example of it...
How is the pressure potential is both positive and negative?? Give example of it...
Mayank Bhargava , 7 Years ago
Grade 12th pass
AIPMT> How is the pressure potential is both pos...
1 Answers
Arun
In turgid plant cells it usually has a positive value as the entry of water causes the protoplast to push against the cell wall (see turgor). In xylem cells there is a negativepressure potential, or tension, as a result of transpiration. Water at atmosphericpressure has a pressure potential of zero.
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