Refer to the Figure

question 67

Multiple Choice

Refer to the figure.

- In soil, there can be layers with more or less available water. In the figure, there is a lower water potential in shallow soils than in deep soils. Considering this scenario, what will the stem water potential be in the middle of the night and why?

• A) -3.0 MPa because the plant will equilibrate with the lowest water potential.
• B) -0.5 MPa because the plant will equilibrate with the highest water potential.
• C) Between -3.0 MPa and -0.5 MPa because the plant will average across all available water.
• D) Between -3.0 MPa and -0.5 MPa because some of the water from the deep soil layers will move through the roots and then into the dry, shallow soils.

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Definitions:

Situational Constraints

External factors that restrict or dictate an individual's behavior, reducing freedom of action.

Underestimating

The act of judging something to be smaller or less important than it actually is, often leading to miscalculation or oversight.

Cognitive Dissonance

The mental discomfort experienced when holding two or more conflicting beliefs, values, or attitudes.

Disagreeable Orders

Commands or instructions given that are unpleasant or undesirable to follow.