Absorption by roots - The Processes Involved — Biology STD 10 — Question

(c) Hypertonic solution
Explanation:
In a plasmolysed cell, the space between the cell wall and plasma membrane is filled with a hypertonic solution. This occurs because the cell wall of a plant is fully permeable, unable to regulate the entry or exit of molecular substances. When placed in a hypertonic solution, the plant cell loses water through exosmosis, causing the protoplasm to shrink and move inward, away from the cell wall. This phenomenon is known as plasmolysis.