Water Rises in Plants Primarily by Cohesion-Tension

question 7

Multiple Choice

Water rises in plants primarily by cohesion-tension. Which of the following is not true about the cohesion-tension model?

• A) Water loss (transpiration) is the driving force for water movement.
• B) The "tension" of this model represents the excitability of the xylem cells.
• C) Cohesion represents the tendency for water molecules to stick together by hydrogen bonds.
• D) The physical forces in the capillary-sized xylem cells make it easier to overcome gravity.
• E) The water potential of the air is more negative than the xylem.

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Definitions:

Algorithm

A systematic, step-by-step procedure, such as a mathematical formula, that guarantees a solution to a problem of a certain type if applied appropriately and executed properly.

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Heuristics

Mental shortcuts or rules of thumb that simplify decision making, but can sometimes lead to cognitive biases.

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Techniques a person can use to help them improve their ability to remember something, often by associating it with something more familiar or patterning.