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NEET2017BotanyTransport in PlantsActual

The water potential of pure water is

Options

  1. AZero
  2. BLess than zero
  3. CMore than zero but less than one
  4. DMore than one

Correct answer

A. Zero

Step-by-step solution

Water potential is the chemical potential of water. When the solute is added to the pure water, this chemical potential drops and the water potential also falls. The water potential of pure water in an open container is zero because there is no solute and the pressure in the container is zero. Water potential cannot be in positive, and when solute is added, it falls from less negative to more negative.

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