Where are the toxic by-products of the metabolic pathways stored in the plant cells?

Plant cells have several organelles that perform specific functions. During metabolic pathways, toxic by-products are produced, that need to be stored safely to avoid damage to the cell.

The organelle responsible for storing toxic by-products in plant cells is the vacuole. Vacuoles are large, membrane-bound organelles that are used for storing various substances, including waste products, pigments, and nutrients.

Therefore, the correct answer is, "Vacuole".