Transpiration is often called a 'necessary evil' because:
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Correct answer: It is needed for sap ascent but wastes most absorbed water
Transpiration is a 'necessary evil' because it leads to massive water loss — over 99% of absorbed water is lost. However, it is essential for the ascent of sap, mineral distribution, and thermoregulation of the plant.
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More Transpiration: Factors and Mechanism questions
- The ability of water to rise in thin tubes is called:
- During transpiration, water is lost from the leaf through:
- High wind speed generally ________ the rate of transpiration initially by ________ the boundary layer.
- Which of the following is the primary purpose of transpiration in plants?
- The immediate cause of the opening or closing of the stomata is a change in the:
- The inner wall of each guard cell (towards the stomatal aperture) is: