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Chapter 21 - Coggle Diagram
Chapter 21
Microphyll Line Of Evoloution
Extant Genera
Formation from Seeds
Ground Pine or Club Moss is common in forests from tropical regions
Morphology
They are similar to the zosterophyllophyes
Similar in Relation
Lycophyta are called microphylls
Laf is an ambigious term
Heterospory
Necessary precondition for evolution of seeds
The megaspore in some species was retained in the sporophyll
Lycophytes represent an ancient line of evolution
Megaphyll Line of Evolution
All Megaphyllous plants form a monophyletic clade
Equisetophytes are classified as division
Division Trimerophtophyta was proposed in 1968 for three genera of extinct plants
Early Vascular Plants
Rhynophytes
Earliest Fossil that were land plants belong to the Genus Cooksonia
Zosterphyllophytes
Small herbs with no secondary growth
Sporangia opened transversely along the top edge
Sporangia were lateral
Vascular Cryptograms
Cryptogram indicates that they have vascular tissue
Have vascular cambium
