Knowra Pteridophyte Pteridophyte A seedless vascular plant, traditionally including ferns, horsetails, and lycophytes. The traditional grouping is not a single natural lineage in modern classifications.
Vascular plant : A plant with specialized tissues that transport water, minerals, and sugars. Pteridophytes belong to this broad group because they have vascular tissues.
Fern : A seedless vascular plant whose leaves, called fronds, typically bear spore-producing structures. Ferns are the most familiar and diverse members of the traditional pteridophyte grouping.
Seed plant : A vascular plant that reproduces using seeds, including gymnosperms and flowering plants. Unlike seed plants, pteridophytes disperse spores and lack seeds.
Sporangium : A structure in which spores are produced, typically by meiosis in plants. Pteridophyte sporophytes form spores inside specialized sporangia.
Land plant : A plant belonging to the lineage that evolved from green algal ancestors and became adapted to life on land. Pteridophytes are part of the broader evolutionary history of land plants.
Spore : A reproductive cell that can develop into a new organism without fusing with another cell. Pteridophytes reproduce by spores rather than seeds.
Horsetail : A spore-producing vascular plant in the genus Equisetum, with jointed stems and reduced leaves. Horsetails are a distinctive lineage historically grouped with pteridophytes.
Bryophyte : A nonvascular land plant, such as a moss, liverwort, or hornwort. Bryophytes also reproduce by spores but lack the vascular tissues of pteridophytes.
Sorus : A cluster of sporangia, commonly found on the underside of fern fronds. Many ferns group their sporangia into visible sori.
Lycopodiophyta : A division of vascular plants comprising lycophytes, among the earliest-diverging living vascular plant lineages. This lineage diverged separately from the lineage containing ferns and seed plants.
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