You forgot to water your favorite plant as a result it is wi

You forgot to water your favorite plant, as a result it is wilting. You rush to get some water for it. Right when you start watering, the plant cells... have a high water potential have a high pressure potential have a low water potential have a positive solute potential

Solution

Ans. Correct option. 3. have a low water potential.

Option 1. Incorrect.

Water potential is the potential energy (say, ability to flow) associated with water in the cell. Greater the concentration of water in the cell, greater is its water potential. Since, the plant has lost significant amount of water and become wilted, it’s water potential is also reduced.   

Option 2. Incorrect.

The mechanical pressure exerted by water on the cell wall is called pressure potentials. It is directly proportional to the water potential, i.e. increase with increase in water potential.

Loss of water causes reduction in pressure potential.

Option 2. Correct. See 1

Option 4. Solute potential of pure water is taken as zero- the maximum value. Solute potential of a solution (pure water + solutes dissolved in it) is always less than zero i.e. negative. Thus, it can never have a positive value.