Question

In a plant cell DPD is zero when it is

• A. Plasmolysed
• B. Turgid
• C. Flaccid
• D. Incipient

Answer 1

The correct option is B Turgid

A cell is fully turgid means it is full of water i.e, it cannot absorb any more water. In a fully turgid cell DPD (Diffusion Pressure Deficit) is zero and the net movement of water into the cell stops satisfying the equation DPD = OP + TP. Therefore, for the fully turgid cells has DPD is zero satisfying osmotic pressure (OP) and turgor pressure (TP) must be equal, when a cell absorbs more and more water turgor pressure increases thereby it will be positive value and osmotic pressure decreases hence it is negative value.

So, the correct answer is option B.