Which statement is TRUE about transpiration pull?*1 pointIs an active transport.The root generates hydrostatic pressure.Xylem sap was pushed downwards.The mesophyll cells in leaves have low water potential.
Question
Which statement is TRUE about transpiration pull?*1 pointIs an active transport.The root generates hydrostatic pressure.Xylem sap was pushed downwards.The mesophyll cells in leaves have low water potential.
Solution
The statement that is TRUE about transpiration pull is: "The mesophyll cells in leaves have low water potential."
Here's why:
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Transpiration pull is not an active transport. It is a passive process that occurs due to the evaporation of water from the leaves (transpiration) and the cohesive and adhesive properties of water.
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The root does not generate hydrostatic pressure in the context of transpiration pull. Instead, it absorbs water from the soil, which then moves up the plant due to transpiration pull.
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Xylem sap is not pushed downwards. In fact, it is pulled upwards from the roots to the leaves due to transpiration pull.
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The mesophyll cells in leaves do have low water potential. This is because they lose water due to transpiration, which creates a water potential gradient that drives the upward movement of water from the roots.
Similar Questions
Water is transported in plants by a variety of means. However, transport over long distances isprimarily the result of:A. root pressure.B. transpiration.C. active transport of water from xylem vessels into leaf cells.D. higher water potential in leaf cells as compared to root cells.E. active transport of water into xylem vessels.
Which of the following describes how water moves through the xylem of a plant?A.In a downward direction through pressure-flow.B.In an upward direction through active transport.C.In a downward direction through capillary action.D.In an upward direction through the force of adhesion.
1What is transpiration in plants?The absorption of water by the root hair cellsThe absorption of water through the leavesThe movement of water through a plant due to evaporation from the leavesThe movement of water through the phloem cells2Which substances enter and leave the plant through the stomata?Oxygen enters; carbon dioxide and water leaveCarbon dioxide and water enter; oxygen leavesWater and oxygen enter; carbon dioxide leavesCarbon dioxide enters; water and oxygen leaves3Which cells control the opening and closing of the stomata?Palisade cellsPhloem cellsGuard cellsXylem cells4What happens to the rate of transpiration when the temperature is increased?It stays the sameIt increasesIt decreasesIt stops altogether5Why does the rate of transpiration decrease in very humid conditions?Because there will be more water inside the leaf than in the air Because the rate of photosynthesis increasesBecause the rate of photosynthesis decreasesBecause there will be less water inside the leaf than in the air6Why are stomata normally found on the underside of leaves?So that they are shaded from the sunSo that they are nearer the ground So that they are protected from rainTo allow water to escape from the leaves by gravity
Explain the mechanism of Pressure Flow Hypothesis involved in the movement of sucrosemolecules from the leaf to the root.
Transpiration in the plants occurs through which of the following ?1 pointHydathodesEpidermisStomataleaflets
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