Origin of fruit and seed Pollination Stigma柱头 Ovule develops to seed Style The fertilized egg(zygote) grows Pollen tube into the embryo(2n) Ovule Oary子房 The fertilized endosperm nucleus 胚珠 eD+ Integument珠被 forms the nutritive endosperm(3n) The integument forms the seed coat E (testa)(2n) Fertilization Female Fertilized gametophyte nucleus (n) Cotyledons Ax Fertilized EmbryogenesisOvule 珠被 子房 柱头 胚珠 Ovule develops to seed The fertilized egg (zygote) grows into the embryo (2n) The fertilized endosperm nucleus forms the nutritive endosperm (3n) The integument forms the seed coat (testa) (2n) Origin of fruit and seed