What is a major function of vacuoles in plant cells?

Vacuoles play a crucial role in maintaining turgor pressure in plant cells, which is essential for keeping the plant upright and maintaining its structure. The turgor pressure is generated by the water stored in the vacuole, pushing against the cell wall. When the vacuole is full of water, it exerts pressure on the cell membrane, causing it to press against the rigid cell wall. This pressure helps the plant hold its shape and supports various physiological processes, such as nutrient transport and growth.

While options regarding the regulation of photosynthesis, storage of genetic information, and facilitation of cellular respiration involve other cellular components or processes, they do not accurately reflect the primary function of vacuoles in plant cells.