Gametangium
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A gametangium is a sex organ or cell in which gametes are produced that is found in many multicellular protists, algae, fungi, and the gametophytes of plants. In contrast to gametogenesis in animals,
Light micrograph of a whole-mount slide of gametangia of Equisetum
Bryophyte
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Bryophytes are a group of land plants, sometimes treated as a taxonomic division referred to as Bryophyta sensu lato, that contains three groups of non-vascular land plants: the liverworts, hornworts,
An example of moss (Bryophyta) on the forest floor in Broken Bow, Oklahoma
Hornworts (Anthocerophyta) were once believed to be the closest living relatives of the vascular plants.
Mosses are one group of bryophytes.