what is ascent of sap ? describe the transpiration pull and water theory
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the movement of water through xylem with dissolved minerals is called ascent of sap.
transpiration is the process of removal of water from the aerial part o the plant... ..
transpiration is the process of removal of water from the aerial part o the plant... ..
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A transpiration pull could be simply defined as a biological process in which the force of pulling is produced inside the xylem tissue. This force helps in the upward movement of water into the xylem vessels. In this process, loss of water in the form of vapours through leaves are observed. This biological process is carried out in all higher plants and trees as their stems are surrounded by bundles of fine tubes, which are made from a woody material known as xylem.
The role of transpiration pull in plants.
During transpiration process, water molecules get evaporated from the stomata. In this process, the concentration of water is reduced in mesophyll cells, which results in lowering the cells sap of mesophyll compared to that of the xylem vessels. This results in upward pull of water from the root to the mesophyll cells by generating a negative pressure in xylem vessels to pull the water from the soil.
Transpiration pull in plants results from the evaporation or excretion of water from the surface of cells in the leaves. This process helps in the proper flow of water and protects the plant from an embolism.
The whole mechanism of transpiration pull in plants could be visualised to a person drawing a bucket full of water from a well when he is in need of water.
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The role of transpiration pull in plants.
During transpiration process, water molecules get evaporated from the stomata. In this process, the concentration of water is reduced in mesophyll cells, which results in lowering the cells sap of mesophyll compared to that of the xylem vessels. This results in upward pull of water from the root to the mesophyll cells by generating a negative pressure in xylem vessels to pull the water from the soil.
Transpiration pull in plants results from the evaporation or excretion of water from the surface of cells in the leaves. This process helps in the proper flow of water and protects the plant from an embolism.
The whole mechanism of transpiration pull in plants could be visualised to a person drawing a bucket full of water from a well when he is in need of water.
HOPE IT HELPS PLEASE MARK IT AS BRAINLIEST
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