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.
Turgor pressure. The pressure exerted by water inside the cell against the cell wall. When a plant cell stores ions, sugars and other solutes in its vacuole, this causes an influx of water. The influx of water results in a large turgor pressure exerted on the plant cell wall. This makes plant cells to become turgid, thus, helping the plants to stand upright, and do not wilt.