US National Weather Service Philadelphia September Weather data records that on September 28, 1984, the high temperature did not exceed 52 degrees Fahrenheit, the lowest high measured in Philadelphia in the past 69 years.
Vacuoles are generally used to store cell products or protect the rest of the cell from invading microorganisms. The large central vacuole of plant cells is a special case. It is used to store water and cellular wastes and helps maintain the necessary internal pressure of plants called turgor pressure. Structure.
A: Turgor pressure is the pressure of water against the inside wall of a plant cell. It causes plant cells to remain turgid, enabling the plant to stand upright without wilting. An influx of water occurs when ions, sugars or other solutes are stored in a plant's vacuole.