The part of the cell primarily used for storage is called the vacuole. Vacuoles are membrane-bound organelles found in both plant and animal cells, but they are much larger in plant cells.
In plant cells, the central vacuole occupies a significant portion of the cell’s volume and serves multiple functions, including storing nutrients, waste products, and helping maintain turgor pressure, which keeps the cell rigid and supports the plant structure. In contrast, animal cells may have smaller vacuoles that serve primarily for storage of substances like ions, nutrients, and waste.
Overall, vacuoles play a critical role in the storage and management of various substances within the cell, contributing to its overall homeostasis and functioning.