what is incipient plasmolysis? kindly explain in detail.

When a plant cell is placed in a hypertonic solution there is an outward movement of the cell sap from the cell membrane through the cell wall. The cell membrane contracts and shrinks due to loss of fluids while the wall remains turgid. The cell appears shrunk inside the wall.

Incipient plasmolysis is the stage when first the signs of shrinkage of the cell contents from the cell wall become detectable.