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Vascular plants without seeds, zost, rhyn, vas, xylem, ferns, monilo, equi…
Vascular plants without seeds
Concept
Interpolation hypothesis
Dibiontic life
Monobiontic
Transformation theory
Early vascular plants
Zosterophyllophytes
naked stems
Enations
All extinct
Rebuchia
Asteroxylon
Rhyniophytes
Rhynia
Aglophyton
Cooksonia
Xylem structures of early vascular plants
Seed plants
Prostosele
Siphnostele
Term vascular cryptogams
Crypto
Vasular tissue
Lacks seeds
Megaphyll line of evolution : Euphyllophytes
Ferns
Reproduce sexually
Single spores
generates sporophytes
Sori
Leptosporgia
Leaf gap
Leaf trace
Psilotum
Origin of Megaphylls (Euphylls)
Sporophyll
Megaphylls
Webbing
Euphyllophytes
Trimerophytes
psilophyton
Euphyliophytes
Lignophytes
Equisetophytes
Monopodial growth
joined stem
Horsetails
hollow and segmented
grow on shoot apical
Monilophytes
Lignophytes
Euliophytes