Protection of the embryo by parental tissue was a defining step in the evolution of

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Embryophytes, also known as land plants, are characterized by the presence of embryonic tissue protected by parental tissue. This adaptation allowed for the colonization of land and is considered a defining step in the evolution of land plants. Gymnosperms, which include plants like conifers, also have embryos, but they are not fully protected by parental tissue as in the case of angiosperms. Coleochaetophytes and green algae are aquatic and do not have embryos. Streptophytes, which include a variety of algae and land plants, share many characteristics with embryophytes but may not have the same level of protective tissue around the embryo.

Protection of the Embryo by Parental Tissue Was a Defining