]> free nuclear endosperm http://purl.org/obo/owl/ISBN#ISBN_0471245194 ISBN:0471245194 ISBN:0080374913 http://purl.org/obo/owl/ISBN#ISBN_0080374913 Endosperm in which at least the first karyokinesis is not followed by cytokinesis. nuclear endosperm coenocytic endosperm cenocytic endosperm plant_structure