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 most prominent structure in plant cells is the large vacuole. 2  The vacuole is a large membrane-bound sac that fills up much of most plant cells. 3  The vacuole serves as a storage area, and may contain stored organic molecules as well as inorganic ions. 4  The vacuole is also used to store waste.