Which term describes the pressure that water exerts in a plant cell?

The correct answer, turgor pressure, refers to the pressure that water exerts against the cell wall of a plant cell. This pressure is a result of water entering the cell via osmosis, causing the central vacuole to fill with water. As the vacuole expands, it pushes the cell membrane against the rigid cell wall, creating turgor pressure. This pressure helps maintain the structural integrity and rigidity of the plant, allowing it to stand upright and resist wilting.

Turgor pressure is crucial for plant cells because it supports various physiological processes, including growth, nutrient transport, and the overall maintenance of the plant's shape. When a plant experiences water loss, turgor pressure decreases, leading to wilting and loss of structural stability. Thus, a healthy turgor pressure is essential for the vitality of plant cells and their proper functioning.