First, the plant is a seed. The seed is it's outer coating or "protection shell" as some may call it. After it has enough strength and nutrients to break out of it's shell, and after it gets out of...
germination,growth,bloomage,repollenation and dispersion
Seed and sapling
It is fertilisation
the stages of flowering plant's life cycle starts as a seed then the seedling,mature plant and finally death.