Here's why:

* Storage: Vacuoles are large, fluid-filled sacs within plant cells that primarily store water, nutrients, and waste products.

* Size: Plant vacuoles can occupy up to 90% of the cell's volume, making them significantly larger than vacuoles in animal cells.

* Function: In addition to storage, vacuoles help maintain cell turgor pressure (rigidity), regulate pH, and even store pigments.

Animal cells do have vacuoles, but they are much smaller and primarily involved in waste disposal and cellular processes.