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Rene
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JordanTranspiration is the process that makes the water potential in a leaf more negative. It involves the loss of water vapor from the leaf surface through stomata, creating a negative pressure that draws water up from the roots through the xylem vessels. This helps to maintain the flow of water and nutrients throughout the plant.
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Why water potential always negative in uptake of water in plant?
To follow the Law of diffusion.
What factors affect water potential?
Water potential is affected by factors such as pressure, solute concentration, and gravity. Pressure can increase water potential (positive pressure potential) while solute concentration and gravity can decrease it (negative solute and gravitational potential). Temperature can also influence water potential by affecting the kinetic energy of water molecules.
What is leaf water potential?
Leaf water potential is a measure of the tension in plant cells and tissues caused by the movement of water. It is an important indicator of a plant's water status and can help assess its ability to uptake water and tolerate drought stress. A more negative leaf water potential indicates greater water stress in the plant.
What does negative pressure do in a plant?
Negative pressure in a plant helps facilitate the movement of water from the roots to the leaves through a process called transpiration. This process helps maintain plant hydration and nutrient uptake. Negative pressure is created when water evaporates from the leaves, causing more water to be pulled up through the plant's vascular system.
Which has more water potential a 0.6 molar solution or a 0.4 molar solution?
The 0.4 molar solution has a higher water potential because as the concentration of solute decreases, water potential increases. Water potential is a measure of the tendency of water to move from one area to another, and it is affected by factors like solute concentration and pressure.
