In this session,we have covered these important topics : 1:- Main Plant Body 2:- Megasporogenesis 3:- Pollination 4:- Cleistogamous and Chasmogamous 5:- Pollinating agent 6:- Reward for Pollinator 7:- Out Breeding Devices 8:- Pollen Pistil Interaction 9:- Fertilisation 10:- Endosperm Development 11:- Embryo Development 12:- Types of Embryo 13:- Seed 14:- Fruit 15:- Aponimis 16:- Polyembryoxy 17:- Hybrid Seed