You should contrast this to sexual reproduction in plants, which requires the formation of flowers so that genetic material is exchanged. This exchange creates variety in a new generation and aids survival of the plant species. Flowers are a plant's reproductive organs. The male gametes are pollen. The female gametes are ovules.
Flowers enable pollen from one plant can fertilise ovules of another plant.
This is called cross-fertilisation and helps create a greater variety in the plants. Variety aids survival as usually some plants will adapt and live in any new conditions. Some plants produce separate male and female flowers, but most plants have flowers containing both male and female reproductive parts. Stamens are the male parts and carpels are the female parts. Some flowers are complex or multiple as in the dandelion.