According to cohesion-tension theory, tension is created by__________________?
Correct answer: B. Transpiration
- A. Hydrogen bonding
- B. Transpiration
- C. Adhesion
- D. Root prerssure
Explanation
Transpiration creates negative pressure in the leaf and pulls the continuous water column upward through xylem under the cohesion-tension theory. Hydrogen bonding provides cohesion between water molecules, but it does not by itself create the tension, so a student may choose a by confusing cohesion with the force-generating process.
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