There are three types of endosperm development

$(i)$ Nuclear Type The primary endosperm nucleus divides repeatedly without wall formation to produce a large number of free nuclei. $e . g$., Maize, coconut and wheat

$(ii)$ Cellular Type Endosperm Every division of the primary endosperm nucleus is followed by cytokinesis e.g., Balsam, Datura, Petunia

$(iii)$ Helobial Endosperm The first division of primary endosperm nucleus is followed by transverse cytokinesis to form two cells. Further development in both the cells occurs like that of nuclear endosperm