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vascular plants (leptosporangiate ferns (eusporangia (periclinal…
vascular plants
leptosporangiate ferns
single axis
vertical shoot
horizontal rhizome
true roots
megaphyllous leaves
endarch siphonostele
leaf trace
leaf gap
eusporangia
periclinal divisions
leptosporangia
surface cell divides periclinally
zosterophyllophytes
small herbs
no secondary growth
lateral sporangia
exarch protostele
protoxylem outer margin
metaxylem in center
enations
megaphylls
megaphyll evolution
telome theory
dictomously branching
lateral stems
telomes
sporophyll
euphyllophytes
megaphyllous plants
equisetophytes
horse tails
scouring rushes
jointed structure
fused leaves
small megaphylls
sporangiophore
umbrella shaped
monopodial growth
early plant structure
two types of xylem organization
no pith
protostele
endarch protostele
protoxylem
differentiates
small narrow cells
metaxylem
differentiates
expanded cells
exarch protostele
metaxylem
center of xylem mass
protoxylem
siphonostele
seed plants
rhyniophytes
equal dichotomous branching
branches being equal size
sporogenous
sporangium
extinct
vascular cryptograms
ferns
fern allies
vascular tissue
lack seeds
hidden reproduction
lycophytes
lateral sporangia
exarch protostele
microphylls
extant lycophytes sporangia
cones
strobili
heterospory
monobiontic
multicellular gametophyte
multicellular sporophyte
one multicellular generation
trimerophytes
overtopping
unequal branching
pseudomonopodial branching
single main trunk
monilophytes
lignophytes
exarch xylem
megaphylles
extant plants
dibiontic life cycle