Difference between DPD,OP,TP,SOLUTE POTENTIAL,etc..
also mention which type of plants has highest those.
Asked by minipkda
23rd May 2018,
5:55 AM
Answered by Expert
Answer:
Solute Potential (ѱs)
The amount by which the water potential is reduced as a result of the presence of solute is called the solute potential or osmotic potentialOsmotic Pressure
- The maximum pressure which can develop in an osmotically active solution when it is separated from pure water by a semipermeable membrane is called osmotic pressure.
- Osmotic pressure is the pressure required to prevent the passage of pure water into an aqueous solution through a semipermeable membrane, thereby preventing an increase in the volume of the solution.
Turgor Pressure
- Turgor pressure (TP) is the pressure developed in an osmotic system because of the entry of water which causes swelling of the system.
The amount by which diffusion pressure of a solution is lower than its pure solvent is known as diffusion pressure deficit (or DPD).
Diffusion Pressure Deficit
- The amount by which diffusion pressure of a solution is lower than its pure solvent is known as diffusion pressure deficit (or DPD).
- Diffusion pressure deficit is therefore also called suction pressure. Its value is always positive for a cell.
- Every liquid has a specific diffusion pressure.
- Pure solvent has a greater diffusion pressure as compared to a solution prepared by dissolving a solute in pure solvent
Water Potential(ѱw)=Solute Potential (ѱs)+Pressure Potential(ѱp)
Osmotic pressure=miRT (where, m=molar concentration, i= ionization constant, R= gas constant, T= temperature)
Diffusion Pressure Deficit=Osmotic Pressure-Turgor Pressure
The turgor pressure of plant cells is typically between 105 and 106 Pa
Osmotic pressure is highest in halophytes and lowest in hydrophytes
Redwood trees and tall trees have the highest solute potential.
Answered by Expert
23rd May 2018,
8:56 AM
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