Stage one (Imbibition phase) – water enters the seed (imbibition). The seed swells and the testa splits
Stage 2 (Lag phase)– respiration begins to speed up, the food in the cotyledons/endosperm is broken down. Called the ‘lag phase’ because nothing obvious is happening.
Stage 3 (Emergence phase) – rapid cell division begins, the radicle emerges followed by the plumule and the shoot begins to grow. The process of germination ends when the shoot reaches the surface and begins to photosynthesise.