When the gametes are readily distinguished as male or female , other therms may be used such as antheridium , archiegonum , or oogonium 配子很快地分化为雌性或雄性以后，其他的细胞会形成如精子囊，颈卵器，卵囊等器官。
A group of cells at the tip of the oogonium in certain green algae ( chlorophyta ) , such as the stonewort chara and the mermaid ' s cup ( acetabularia ) 2某些绿色藻类（绿藻门）中颈卵器顶部的一组细胞，例如轮藻属和伞藻属的冠细胞。
In this species , the first division of zygote produces two equal hemispheric cells by the first partition wall at the right angles to the axis of the archegonium 合子的第一次分裂面垂直于颈卵器的长轴，产生两个相等的子细胞，靠近颈卵器颈部的营养器官原始细胞和远离颈部的基足原始细胞。
