noun ダウンロード 🔗共有 珠孔, 小孔 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. " 花粉管は胚珠の珠孔に向かって成長し、精子が内部の卵を受精させ、種子の発育を開始できるようにします。 biology plant seed anatomy organ AIとチャット語彙ゲーム読解練習
noun ダウンロード 🔗共有 小孔 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. " 精子は小孔を通って卵に入り、受精を開始した。 anatomy biology organ plant sex organism physiology seed AIとチャット語彙ゲーム読解練習
