The proembryo from zygotic cell divisions may be divided into three parts: proper , hypoblast and suspensor.玉米合子细胞分裂形成的原胚分为胚柄 、 基与胚体三部分....

n.内胚层，下胚层...

hypoblast的音标：hypoblast的英式发音音标为：['haɪpəblæst]hypoblast的美式发音音标为：['haɪpəˌblæst]...