Physiological changes during seed 1. Reserve deposition 2. Increased respiration (to provide energy for reserve synthesis). 3. Hormones increase in the turn of: cytokinin, gibberellin and auxin, ABa Fertilized endosperm nucleus (3n) Cotyledon As⑧ Quiescent Developing Fertilized embo egg (2n) Embryo1.Reserve deposition 2. Increased respiration (to provide energy for reserve synthesis). 3. Hormones increase in the turn of: cytokinin, gibberellin and auxin, ABA Physiological changes during seed development