How does the process of fertilisation …

When ripe pollen from an anther of the same kind of flower catches on the stigma, each pollen grain sends out a tiny threadlike tube. The tube grows down through the style and pierces one of the ovules in the ovary. This process is called fertilization. Each ovule must receive the contents of the pollen tube before it can develop into a seed. It usually takes the tube from two to five days to reach…

<a data-article-id="274354" data-assembly-id="53333" data-caption="The flower is the reproductive unit of a plant, responsible for the survival of the species. This drawing shows a lily cut open down one side. The sticky stigma at the top has caught a pollen grain. The grain will send a pollen tube down through the pistil of the style, into the ovary, and then upward into the center mass, called the ovule. The male cell carried by the pollen grain down the pollen tube will join the female cell in the ovule. After this fertilization takes place, the seed will soon form." data-credit="Encyclopædia Britannica, Inc." data-media-type="IMAGE" href="https://kids.britannica.com/students/article/flower/274354/media?assemblyId=53333" title="fertilization"></a>