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Seedless Vascular Plants (Division Lycophyta (structures (roots, stems,…
Seedless Vascular Plants
Division Lycophyta
aka
club mosses
ground pines
look like miniature pine trees
oldest group of vascular plants
tree sized
30 m
Jouharah
resemble moss gametophytes
reproductive structures
spores
club shaped
spike shaped
vegetation of paleozoic
coal
structures
roots
stems
small, scaly, leaflike structures
root grows from the base of a stem
dominant
vascular tissue
epiphytes
Division Pterophyta
Lama Alrobayan
This plant division includes ferns and horsetails.
Ferns
Ferns grow in many different environments
When there is no water ferns will have trouble surviving so they will appear lifeless.
When water is available the ferns resume growth
Ferns
They produce root and thick underground stems called rhizome.
Rhizome
The rhizome is a food storage organ
Fern spores form
Sporangium
Clusters of sporangia form
Sorus
Horsetails
They produce spores in strobili at the tips of the reproductive system.