Consider the following statements regarding the advantages of embryo culture and choose the correct answer:
1. It is the excellent method for understanding the nutritive requirements of the developing embryo
2. Embryo culture gives an insight into the factors which influence embryonic differentiation
3. It promises to be of great economic value as a means of achieving a much wider range of hybrid plants
4. Seeds, which normally remain dormant, can be made to germinate immediately by the help of embryo culture technique