Volume fraction $(V^V)$ of each organelle measured from 60 independent sampling grids. Species are shown left-to-right from smallest to largest cell sizes. Boxes show interquartile ranges, whiskers show 1.5× the interquartile ranges, and points show outliers. For each organelle, ANOVA revealed no significant differences in volume fraction across the three species, despite ~50-fold difference in cell size. Golgi is inset with a different y-axis to improve visualization.