Apogamy It is the development of sporophyte without syngamy (fusion of gametes) from vegetative cells. In this case embryo is developed from synergid/antipodal cells. Apomixis It is replacement of sexual reproduction by asexual reproduction. AmphimixisIt is the kind of sexual reproduction in which male and female gamete fuse to form zygote. Apospory It is the development of 2n gametophyte without meiosis from vegetative or reproductive cells of the sporophytes.