Just like Gymnosperms, the more advanced Angiosperms use pollen as their male gametophyte which contains the sperm and have the egg cells in the archegonium of the female gametophyte! The pollen grains that contain the tube cell and the generative cell are carried to the stigma of the flower by wind or animal (pollination). The tube cell forms a pollen tube down the stigma and style to the ovary. The pollen tube will enter the ovary through an opening (micropyle). The sperm will then swim (some what) down the tube and fertilize with the egg cell in the female archegonium! Through there the endosperm which surrounds the female gametophyte provides food for the embryo . The ovules develop into seeds, the ovary develops into fruit. Animals are then attracted to the fruit and go to eat it. Once the fruit has made its way through the animals body and has been disposed, the seed will be in a new location to start over the cycle, thus creating genetic diversity.
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