Question

why pressure potential is always positive??

Answer 1

pressure potential. pressure potentialSymbol Ψ p. The component of waterpotential due to the hydrostatic pressurethat is exerted on water in a cell. In turgid plant cells it usually has a positive value as the entry of water causes the protoplast to push against the cell wall (see turgor).

Answer 2

pressure potential. pressure potentialSymbol Ψ p. The component of waterpotential due to the hydrostaticpressure that is exerted on water in a cell. In turgid plant cells it usually has apositive value as the entry of water causes the protoplast to push against the cell wall (see turgor).