0
As you decrease humidity, I believe the water potential of the environment also decreases. Conversely, if you increase the humidity, the water potential increases. An example can be found in water movement of leaves. As the humidity increases, the rate of diffusion goes down because water moves from areas of high water potential to low water potential. Thus, as the humidity goes down, the rate of diffusion of water from leaves to the environment increases because water potential of the environment is lower (more negative) than the leaf's, so water flows out of the leaf.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoYes.Humidity do affect the osmotic potential.
Add your answer:
Earn +20 pts
What factors affect water uptake by plant cells?
soil humidity, air humidity, soil structure, pH, nutrients availability, temp,
What is water potential gradient?
similar to potential energy, water flows down a gradient from higher potential to lower potential. Higher potential is generally in the soil/roots and lower potential is at the leaves/atmosphere. The water has potential to flow down the gradient
What determines humidity?
Humidity is the amount of water vapor in the atmosphere .Humidity is actually meant by relative humidity.There is also absolute humidity etc..Relative humidity is defined as the ratio of the partial pressure of water vapor in a parcel of air to the saturated vapor pressure of water vapour at a prescribed temperature.High humidity makes people feel hotter outside in the summer because it reduces the effectiveness of sweating to cool the body by reducing the evaporation of perspiration from the skin. Humidity is also greatly affected by intensity of solar radiation, altitude, wind exposure, cover and water status of soil.It is said that about 40% RH(relative humidity) is comfortable for human body. You can find more details about humidity on wikipedia .Follow the link - http://en.wikipedia.org/wiki/Humidity
What is the new water potential of a plant cell of water potential 500kPa after immerse into pure water?
Water potential is the potential energy of water in a system (eg a solution or a cell) compared with pure water under the same conditions. The value of the water potential depends mainly on two factors: 1) The presence of dissolved solutes. Solutes dissolved in the water reduce the energy of the water molecules, and so lower the water potential. This happens because the solute molecules attract the water molecules and reduce their movement. The component of water potential due to solutes is called the solute potential of the solution. 2) The presence of an excess pressure, above that of normal atmospheric pressure. Pressure increases the movement of the water molecules and so increases their energy, thus increasing the water potential. The component of water potential due to pressure is called the pressure potential of the solution. The total water potential of a solution is the sum of the solute potential and pressure potential water potential = solute potential + pressure potential The pressure potential can be positive or negative. An additional pressure on the solution will be positive and increase the pressure potential. If the solution is subject to a reduced pressure (a negative pressure or suction) the pressure potential will be negative and will reduce the water potential. The solute potential is always negative and so always reduces the water potential. Pure water is given a water potential of zero (similar to the way in which the freezing point of water is given a value of 0o Celsius). So anything which reduces the energy of the water molecules (such as dissolving a solute) will reduce the water potential to below zero, and so will be negative. The movement of water depends on the difference in water potential between two systems eg two adjacent cells, or a cell and the surrounding solution. This difference is called the water potential gradient. Water will always move from the higher to the lower water potential ie down the water potential gradient. In osmosis, the two solutions involved are often at atmospheric pressure. In this case it is only the difference in solute concentration which determines the direction of water movement. Water moves from the dilute solution to the concentrated solution. The concentrated solution has a higher concentration of dissolved particles, and so has a lower solute potential than the dilute solution. Since the pressure potential is zero (no excess pressure), the water potential is equal to the solute potential. Water will therefore move from the higher water potential (ie the dilute solution) to the lower water potential (ie the more concentrated solution), down the water potential gradient. It is possible for the pressure potential to counteract the solute potential. For example, if a solute (eg salt) is added to pure water, the water potential will be reduced to a negative value. If the solution is then put under extra pressure eg in a syringe, the positive pressure potential can raise the total water potential above zero ie give it a positive value. This happens especially in plant cells, where the cell wall prevents an increase in volume of the cell. So if water enters by osmosis the extra water molecules cause the pressure inside the cell to increase. This intracellular pressure in a plant cell is called the turgor pressure. For more information see: http://en.wikipedia.org/wiki/Water_potential http://www.colorado.edu/eeb/courses/4140bowman/lectures/4140-07.html http://www.phschool.com/science/biology_place/labbench/lab1/watpot.html
What factors effect the rate of transpiration?
Humidity - increased humidity decreases transpiration, as the air is already saturated with water, and so the water potential gradient is smaller, and so less water is lost by transpiration. Temperature - increased temperature increases transpiration as the water has a greater kinetic energy and so there is more evaporation of water. Wind/air movement - in still air, a shell of highly saturated air surrounds the air, decreasing the water potential gradient and decreasing transpiration rate, but wind destroys this shell of saturated air so there is a bigger water potential gradient, amd more transpiration. Light intensity - light is needed for the stomata to open - they do not open at night time (unless the plants are xeromorphically adapted desert plants or plants living in other harsh environments such as salt marshes). Internal factors that affect transpiration are the number of stomata, leaf area, the cuticle (thick waxy cuticles prevent water loss, whilst thinner and less waxy cuticles allow more water to be lost. Distribution of stomata also affects transpiration - most plants have most of the stomata on the lower surface of the leaf where the stomata are less exposed to environmental conditions.
What factors affect water uptake by plant cells?
soil humidity, air humidity, soil structure, pH, nutrients availability, temp,
Can humidity affect tin cans?
Tin cans are resistant to water.
Does the humidity of the air affect how quickly water will evaporate?
Yes. Humidity represents the amount of water vapor that exists for a given temperature, pressure, and volume. As humidity increases, the evaporation rate will decrease.
What affects does humidity have?
Humidity is the measure of water in the air or other vapor. The greater the humidity, the larger the mole fraction of water in the vapor phase. Therefore less water will evaporate at constant pressure.
Does snow affect humidity?
yes snow do affect humidity
How does high humidity affect weight?
Humidity generally does not affect weight.
How does condensation affect weather?
A change in the amount of water vapor in the air affects humidity and that's how condensation affect the weather.
How does humidity affect conductivity?
humidity affect conductivity because god said so and there is your answer
Which factors affect water potential in living cells?
Some factors which influence water potential include gravity, pressure, and solute concentration. Adding solute lowers the water potential. An increase of pressure will increase the water potential.
Does air temperature affect humidity?
How does temperature affect humity? The mount of water vapor that air can hold depends on the temperature of the air.
How does the addition of solutes affect water potential?
adding the solute raises the boiling point of the water.
Large water bodies often affect weather downwind by?
They can change air temp. and humidity in the air.
