| 1. | The archegonium is generally reduced in nature . 藏卵器在性质上一般是简退的。 |
| 2. | Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos . 许多林木树种都有颈卵器,受精以后便产生许多原胚。 |
| 3. | For example , the archegonium ( female organ ) of the moss funaria secretes sucrose 例如藓类颈卵器(雌性器官)分泌蔗糖。 |
| 4. | The female gametophyte is represented by the embryosac , the archegonia being absent 雌性配子体存在于胚囊中,颈卵器缺失。 |
| 5. | Venter the swollen base of an archegonium that contains the egg cell ( oosphere ) 颈卵器)腹部:颈卵器内含有卵细胞(卵球)而向外膨大的基部。 |
| 6. | Most gymnosperms retain archegonia except for the most advanced genera gnetum and welwitschia 除了买麻藤属和百岁兰属以外大多数裸子植物还保留有颈卵器。 |
| 7. | Enclosure of the nucellus by the integuments is incomplete , the embryo sac or , in gymnosperms , to the archegonium 珠被并不是将珠心完全封闭,而是留有珠孔以便受精时花粉管进入胚囊,或裸子植物的藏卵器。 |
| 8. | 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。 |