Question

Identify the correct relationship with reference to water potential of a plant cell.

• A. ${\psi }_w={\psi }_m+{\psi }_s+{\psi }_p$
• B. ${\psi }_w={\psi }_m+({\psi }_s-{\psi }_p)$
• C. ${\psi }_w={\psi }_m-({\psi }_s+{\psi }_p)$
• D. ${\psi }_w={\psi }_m-{\psi }_s-{\psi }_p$

Answer 1

The correct option is A ${\psi }_w={\psi }_m+{\psi }_s+{\psi }_p$

The water potential is calculated by the sum of osmotic or solute potential and pressure potential. The matrix potential is a minor factor in calculation of water potential and can be neglected.

So, the correct answer is '${\psi }_w={\psi }_m+{\psi }_s+{\psi }_p$'