Question

When a plasmolysed cell is placed in a hypotonic solution, then water will move inside the cell. Which force causes this?

• A. DPD
• B. OP
• C. WP
• D. None of the above

Answer 1

The correct option is A DPD

In plants, water moves under the guidance of diffusion pressure deficit or DPD. Diffusion pressure deficit will be more if more solute particles are dissolved and it will be less in a solution if fewer solute particles are dissolved in the solution.

Consequently, DPD of a hyperosmotic solution is more as compared to DPD of a hypoosmotic solution.

Water moves from a region (or solution) of lower DPD to a region (or solution) of higher DPD. If a plasmolysed cell is placed in hypotonic solution. The DPD of the solution is less than the DPD of cell sap. Thus, water will move inside the plasmolysed cell from solution.

So, the correct answer is 'DPD'