PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The loss of water from leaves by osmosis
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The uptake of water through root hair cells
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The evaporation and diffusion of water from inside leaves
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None of the above
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Detailed explanation-1: -Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.
Detailed explanation-2: -Water is lost by plants due to a process called transpiration.
Detailed explanation-3: -Transpiration is the process in which water is lost as water vapor from the aerial parts of the plants through stomata.
Detailed explanation-4: -Transpiration Keeps the Water Moving In plants, water enters the root cells by osmosis and moves into tubes called xylem vessels to be transported to the leaves. Water molecules inside the xylem cells are strongly attracted to each other because of hydrogen bonding (this is called cohesion).
Detailed explanation-5: -The process by which plants remove excess water through stomata present on the surface of leaves is called ‘transpiration’. Transpiration is essentially evaporation of water from leaves of the plant.