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How transpiration is responsible for the movement of water in the xylem?
Wiki User
∙ 10y ago
Transpiration is the loss of water from the plant through evaporation at the leaf surface. It is the main driver of water movement in the xylem. Transpiration is caused by the evaporation of water at the leaf, or atmosphere interface; it creates negative pressure (tension) equivalent to -2 MPa at the leaf surface. However, this value varies greatly depending on the vapor pressure deficit, which can be insignificant at high relative humidity (RH) and substantial at low RH. Water from the roots is pulled up by this tension. At night, when stomata close and transpiration stops, the water is held in the stem and leaf by the cohesion of water molecules to each other as well as the adhesion of water to the cell walls of the xylem vessels and tracheids. This is called the cohesion-tension theory of sap ascent.
Wiki User
∙ 10y ago
Wiki User
∙ 11y agoWater loss from the leaf is replaced via the apoplast, symplast or vacoular pathways down concentration gradient.
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What is the mechanism of water movement through the xylem?
transpiration is the process that moves substances through the xylem
Does xylem carry sucrose?
Yes, xylem vessels carry water and other minerals from the root to the leaves. The movement of the water through the xylem vessels occur because of three processes: capillarity, transpiration pull and root pressure.
What is the best explanation for the process of transpiration in plants?
It is the evaporation of water from leaf stomata, which helps in xylem transport
What is xylem vessel?
xylem vessel is a vessel in plants that transport water and minerals from the roots to parts of the plant where it is needed, through transpiration and turgor pressure in roots.
What part of the plant carries water?
Through the stem runs the vascular tissue called xylem, which carries water from the roots to the leaves.
What is the process that is responsible of losing water in Plants through transpiration?
Capillarity. Capillarity is the upward movement of water from roots to leaves, through xylem. Transpiration is the evaporation of water from the leaves through stomates.
What is the mechanism of water movement through the xylem?
transpiration is the process that moves substances through the xylem
Translocation and transpiration?
There is a direct relationship between translocation and transpiration. Translocation refers to movement of sugars which are dissolved in the phloem while transpiration refers to the process through which water is moved from the roots to the stomata through the xylem.
Is the mass flow of water in the xylem or the evaporation of water vapour from the surface of leaves part of the process of transpiration?
The evaporation of water from the porous surface of the leaves is part of transpiration. The water in the xylem is not. The xylem and its neighboring counter part move water throughout the plant in order for it to preform photosynthesis.
How transpiration is useful for plants?
Helps to circulate water through xylem(transpiration pull),cools the plant.
Why do you rubbed paraffin at xylem?
To decrease the rate of transpiration. Paraffin is an oil or wax. The paraffin prevent the water in xylem loose up too much of water during transpiration. Especially in a hot, dry day.
What two factors that work together to move water in a plant?
Xylem and Transpiration
What are the two forces that move water through the xylem?
transpiration and root pressure
Does xylem carry sucrose?
Yes, xylem vessels carry water and other minerals from the root to the leaves. The movement of the water through the xylem vessels occur because of three processes: capillarity, transpiration pull and root pressure.
What is the name of the water cycle process where plants give of water vapor to the atmosphere?
The process is called transpiration, whereby water vapor is released through the stomata of plant leaves. A different process that releases liquid water from the xylem is called guttation.
What happened in the process called transpiration?
Well the process is that the xylem use water to do tranpiration
Most transpiration occurs in the?
xylem
