AP BIOLOGY

Detailed explanation-1: -In the absence of enough water, however, central vacuoles shrink and turgor pressure is reduced, compromising the plant’s rigidity so that wilting takes place.

Detailed explanation-2: -If a plant is not watered, the extracellular fluid will become isotonic or hypertonic, causing water to leave the plant’s cells. This results in a loss of turgor pressure, which you have likely seen as wilting.

Detailed explanation-3: -Plant cells have high concentrations of molecules dissolved in their cytoplasm, which causes water to come into the cell under normal conditions and makes the cell’s central vacuole swell and press against the cell wall. With a healthy supply of water, turgor pressure keeps a plant from wilting.

Detailed explanation-4: -If a plant cell is surrounded by a solution that contains a lower concentration of water molecules than the solution inside the plant cell, water will leave the cell by osmosis and the plant cell will become flaccid (soft).

Detailed explanation-5: -The central vacuole has many functions. Aside from storage, the main role of the vacuole is to maintain turgor pressure against the cell wall. Proteins found in the tonoplast control the flow of wate r into and out of the vacuole. The central vacuole also stores the pigments that color flowers.