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.
In many types of plant cells, this vacuole can occupy between 30% and 80% of the total volume of the cell, making it the largest single cellular structure. The main function of the large central vacuole is to help the cell maintain water pressure, aka turgor pressure, on the cell wall.