Why does endosperm development precede embryo development in angiosperm seeds? State the role of endosperm in mature albuminous seeds.

Ex-albuminous (or) non-endospermic seeds do not consume endosperm during embryo development.

The mature seeds of plants such as gram and peas possess no endosperm,because

(a) these plants are not angiosperms

(b) there is no double fertilisation in them

(c) endosperm is not formed in them

(d) endosperm gets used by the developing embryo during seed development

In __ seeds, endosperm is not completely consumed by the developing embryo.