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.
1. the normal distention or rigidity of plant cells, resulting from the pressure exerted by the cell contents on the cell walls. 2. the state of being swollen or distended. turgor. The internal tension that keeps a non-woody plant upright, created by the pressure of water in its tissues.