Question

DPD is equal to :

• A. OP $\times$ TP (WP)
• B. OP $+$ TP (WP)
• C. OP $-$ TP (WP)
• D. TP (WP) $-$ OP

Answer 1

The correct option is C OP $-$ TP (WP)

• Diffusion pressure deficit (DPD) is the amount by which two solutions differ in their diffusion pressure.
• It is defined as the amount by which the diffusion pressure of water or solvent in a solution is lower than that of pure water or solvent is known as diffusion pressure deficit. It allows for easy absorption of water due to the diffusion pressure gradient. Water moves from lower DPD to higher DPD.
• It is equal to the difference between osmotic pressure and turgor pressure.
• DPD of a cell is influenced by both osmotic pressure and wall pressure (turgor pressure) which opposes the endosmotic entry of water, i.e. DPD = OP - wall pressure.

So, the correct answer is option C.