Plant Fertilisation

- When the pollen grain sticks to the stigma, it begins to germinate causing a tube to grow named a pollen tube. It descends down the stigma, through the carpel and into the ovule. Each pollen grain has its own pollen tube.

- The pollen nucleus fertilises the ovule, which will lead to the formation of a zygote. This will then turn into the embryonic plant.  In addition to this Cotyledons are formed, which are food stores for the seedling. They support the plant until it develops its first set of leaves.

- The outside of the ovule forms a seed coat, or a TESTA

- Another thing that occurs, is the thickening of the walls of the ovary/carpel. The plant will put energy into building up sugars and proteins in the ovaries/carpel, which produces fruit.