In a transpiring plant, the water potential is lowest in the:
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Correct answer: Atmosphere
Water always moves from a region of higher water potential to lower water potential. The atmosphere usually has the lowest (most negative) water potential, which 'pulls' the water out of the leaf.
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More Transpiration questions
- What is the primary definition of transpiration in plants?
- Which of the following structures is responsible for the majority (about 90%) of transpiration in most terrestrial plants?
- The cells that surround the stomatal pore and control its opening and closing are called:
- Which instrument is used to measure the rate of transpiration by measuring the amount of water absorbed?
- How does an increase in external humidity affect the rate of transpiration?
- The 'transpiration pull' or suction force that pulls water up from the roots is best explained by which theory?