FORESTRY
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT involved in moving water up a plant?
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Capillary action made possible by the tube-shaped cells
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Transpiration in the leaves, which helps maintain low pressure in the leaves
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Companion cells pumping water in and out of the xylem using active transport
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Casparian Strip in the roots, which helps maintain high pressure of water in the roots
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Explanation:
Detailed explanation-1: -Xylem elements are dead cells thus, active transport via membrane do not take place in them.
Detailed explanation-2: -Root pressure pushes water up. Capillary action draws water up within the xylem. Cohesion-tension pulls water up the xylem.
Detailed explanation-3: -Osmosis plays a central role in the movement of water between cells and various compartments within plants. In the absence of transpiration, osmotic forces dominate the movement of water into roots.
Detailed explanation-4: -Answer and Explanation: The a) pressure flow hypothesis does not promote water movement in xylem.
There is 1 question to complete.