Describe the growth of the pollen tube and how fertilisation leads to seed and fruit formation ?

The pollen tube grows throgh the style and reaches to the egg cell through the micropyle. It then releases two male gametes. One fuses with the egg cell and other with the synergids. The one with the egg celss makes it to form the zygote while the synergids make it endosperm mother cell and forms the endosperm. The zygote further develops into embryo and a new plant after gemrination and the stimulus of fertilization triggors the development of the ovary into fruit.