alleryStart learning →What is the highest pressure potential quoted for a well watered plant?
A0.5 MPa
B1.0 MPa
C1.5 MPa
D2.5 MPa
Answer & Solution
Correct answer: C. 1.5 MPa
1. Pressure potential, also called turgor potential, may be positive or negative.
2. Positive pressure inside cells is contained by the cell wall, producing turgor pressure.
3. Pressure potentials typically run around 0.6 to 0.8 MPa.
4. They can reach as high as 1.5 MPa in a well watered plant, which is the ceiling asked for.
5. Values below that are within the ordinary range rather than the maximum.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.5 Transport of Water and Solutes in Plants_
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