NTA Abhyas NEET2020BotanyTransport in PlantsPractice
Which one of the following statement is incorrect regarding diffusion pressure deficit (DPD)?
Options
- ADPD is directly proportional to the solute concentration of the system.
- BDPD of fully turgid cell becomes zero
- CDPD for a plasmolysed cell is highest
- DDPD of flaccid cell is always more than osmotic pressure.
Correct answer
A. DPD is directly proportional to the solute concentration of the system.
Step-by-step solution
DPD is the difference in diffusion pressure of a solution to its pure solvent. On addition of solute DPD increases. DPD = OP – TP. For a flaccid cell TP is zero thus DPD is equal to OP. For a plasmolysed cell TP is negative thus DPD is maximum and is equal to OP + TP.