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Seed Plants I: Seed Plants Without Flowers( Gymnosperms) (Division…
Seed Plants I: Seed Plants Without Flowers( Gymnosperms)
Division Progymnospermophyta
Progymnosperms
Archaeopteridales
secondary Phloem trees upto 8.4m
Primary xylem
Evolution of Seeds
sporophyte
Aneurophytales
Secondary growth, trees up to 12m
Division Coniferophyta
Conifers
Pine, European Larch
Division Cycadophyta
Cycads
Division Pteridospermophyta
Seed ferns
Analogous, Manoxylic
Division Cycadeoidophyta
Cycadeoids
Division Ginkgophyta
Maidenhair Tree
Dichotomous venation
Microsporophyllus
Broad leaves
Division Gnetophyta
Ephedra
Naked ovules
Microsporangiate cone
desert-adapted dicots
