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Chapter 22 - Coggle Diagram
Chapter 22
Divisions Progymnospermophyta
Archaeopteridales
Trees up to 8.4 m tall and abundant in wood
Evolution of Seeds
Spores can be identified with sporophytes
Aneurophytales
Varied in stature from shrubs
From Seed Evolotuion
Division Conifers
Diverse trees of moderate size to Gigantic size
Much Larger Tree
Venation of conifer leaves are just one or maybe two long long veins
Transformation Parenchyma is intermixed with the tracheids
Division Gnetophyta
Three groups of plants
Vines or small shrubs
Division Seed Ferns
Seed ferns first appeared in the upper Devonian Period
Evolution of Seeds
