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प्रश्न
Identify the INCORRECT statement.
पर्याय
In a flaccid cell, T.P. is zero.
In a turgid cell, DPD is zero.
In a fully turgid cell, TP = OP.
The water potential of pure water is negative.
उत्तर
The water potential of pure water is negative.
Explanation:
According to the principle of thermodynamics, every component of a system has a definite amount of free energy which is used to do work. Osmotic movement of water is on the basis of free energy. Free energy per molecule in a chemical system, is called its chemical potential. The chemical potential of water is called water potential. The water potential of protoplasm is equal but opposite in sign to DPD. It has a negative value. The water potential of pure water is always zero. The addition of any solute in it decreases its psi (Ψ) value. Therefore, it has a negative value.
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संबंधित प्रश्न
Explain why pure water has the maximum water potential.
Briefly describe water potential. What are the factors affecting it?
What happens when a pressure greater than the atmospheric pressure is applied to pure water or a solution?
Water absorption takes place through ______
Contribution of passive water absorption to total water absorption is ______.
Water potential of pure water at standard temperature is equal to ______.
Define water potential and solute potential.
Why is solute potential always negative? Explain yw = ys + yp
Cell A has water potential - 10 bars and cell B has - 5 bars, the movement of water will occur from______.
Explain factors affecting water absorption.
