Development of endosperm (preceding the embryo) takes place in both, developing embryo derives nutrition from endosperm Endosperm is retained/persists /not fully consumed in castor, endosperm is consumed in groundnut.
Endosperm development precedes embryo development. The triploid primary endosperm nucleus (PEN) undergoes repeated mitotic divisions, without cytokinesis, at this stage of development, the endosperm is called free-nuclear endosperm wall formation takes place later on, as a result, the endosperm becomes partly or fully cellular. The cells of the endosperm store food materials, which are later used by the developing embryo.
The endosperm may be completely utilized by the developing embryo before the maturation of seeds as in pea, bean, groundnut etc. in non-albuminous or non-endospermic seeds. In albuminous or endospermic seeds, a portion of endosperm persists in the mature seeds. e.g., castor.