noun 下载 🔗分享 珠孔 In seed-bearing plants, a small opening in the integuments of the ovule through which sperm are able to access the ovum. Examples : "The pollen tube grows towards the micropyle of the ovule, allowing the sperm to fertilize the egg inside and start seed development. " 花粉管会朝着珠子的珠孔生长，使得精子能够进入其中，使卵子受精，并开始种子发育。 biology plant seed anatomy organ 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 珠孔，卵孔 The hilum of an ovum at the point of attachment to the ovary; any opening in the coverings of an ovum by which spermatozoa may find entrance. Examples : "The sperm cell entered the egg through the micropyle, initiating fertilization. " 精子通过珠孔进入卵子，开始了受精过程。 anatomy biology organ plant sex organism physiology seed 与AI对话词汇游戏阅读练习
