珠孔

huā fěn guǎn zài zǐ fáng zhōng shēng zhǎng bìng tōng guò zhū kǒng jìn rù pēi zhū

花粉管在子房中生长并通过珠孔进入胚珠。

Pollen tube grows in ovary and gets into ovule via micropyle.