The water potential of pure water or a solution increases on the application of pressure values more than atmospheric pressure. For example: when water diffuses into a plant cell, it causes pressure to build up against the cell wall. This makes the cell wall turgid. This pressure is termed as pressure potential and has a positive value.

For more answers visit to website:
https://www.tiwariacademy.com/ncert-solutions/class-11/biology/chapter-11/