The function of which cell part is most similar to the human excretory sytem?

Lysosomes are organelles which are responsible for breaking down and digesting wastes in the cell.

Lysosomes and vacuoles have the same functions. Both are enclosed organelle compartments within a cell  and are recycling centers responsible for breaking down substances or complex molecules that goes into a cell. Both are sacs which contain digestive enzymes for breaking down foreign materials, food, and pathogens. Vacuoles are found in plant cells and lysosomes are in animal cells. Vacuoles play an important role in plant’s food production. It stores water and hydration of plants.