As the starch-grains grow, the leucoplasts gradually disappear.
Those chromatophores which remain colorless, and serve simply as starch-f ormers in parts of the plant not exposed to the light, are called leucoplasts or amyloplasts.
It is highly probable that starch is only produced as the result of the activity of chromatophores, either in connection with chromoplasts, chloroplasts or leucoplasts.
Albumen crystals are also to be found in the cytoplasm, in leucoplasts and rarely in the nucleus.
As the cell grows they may become converted into leucoplasts (starch-formers), chloroplasts (chlorophyllbodies), or chromoplasts (color-bodies).