Flaccidity in plants refers to a state in which the plant cells lose their water content and become soft and limp. This happens when there is a loss of water in the plant, either due to a lack of water supply or excessive water loss through transpiration. This loss of water causes the cell to shrink and lose its turgidity, resulting in the plant becoming wilted. As a result of the loss of turgor pressure, the plant may not be able to carry out important functions such as photosynthesis and nutrient uptake. Therefore, the correct answer to the question is wilting.