Naked embryos are also known as spores. These embryos are formed after fertilization and are not formed inside the seed. These embryos are the characteristic feature of bryophytes and pteridophytes. The reproductive organs bearing spores are called sori, and they are very inconspicuous. Bryophytes and Pteridophytes have the naked embryo. For example, Pteridophyte Marsilea and Bryophyte Funaria.