Give an example of region in plants where negative pressure potential is found.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Xylem vessels exhibit negative pressure potential (also called tension) during transpiration. This negative pressure, generated by water loss from leaves, creates a transpiration pull that draws water upward from roots through the xylem.
Numerical Context: During active transpiration, xylem pressure can reach values as low as -2 MPa or lower.
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