an increase in the number of cells is called
Hyperplasia Hyperplasia (from ancient Greek ὑπέρ huper, "over" + πλάσις plasis, "formation"), or hypergenesis, is an increase in the amount of organic tissue that results from cell proliferation.[4] It may lead to the gross enlargement of an organ, and the term is sometimes confused with benign neoplasia or benign tumor.[5]
Vacuole Most mature plant cells have one large vacuole that typically occupies more than 30% of the cell's volume, and that can occupy as much as 80% of the volume for certain cell types and conditions.[17] Strands of cytoplasm often run through the vacuole.