7.1.Stamen, Microsporangium, Pollen Grain; Pistil, Megasporangium (Ovule) and Embryo Sac; Development of Male and Female Gametophytes; Pollination – Types, Agents, Out Breeding Devices and Pollen–Pistil Interaction. Double Fertilization; Post Fertilisation Events: Development of Endosperm and Embryo; Development of Seed, Structure of Dicotyledonous and Monocotyledonous Seeds, Significance of Fruit and Seed. Special modes – Apomixis, Parthenocarpy, Polyembryony