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 most plants the relative elongation of the cell membrane that results from turgor does not exceed 5â10 percent, and the turgor pressure is in the range of 5â10 atm. Turgor gives plant tissues resilience and strength. All stages of autolysis, fading, and aging are accompanied by a decline in turgor. V. V. KABANOV.