Post on 06-Jan-2016
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Land Plants fall into two major groupsNon vascular Vascular0
Non-Vascular PlantsLack vascular tissue Very smallKnown as the bryophytes
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The BryophytesLiverwortsHornwortsMosses0
MossesTrue mossesSphagnum (Peat) mossesGranite mosses0
True MossesConsists of structures resembling leaves stems and roots
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True MossesLeaves have no veinsStems have no vascular tissue0
True MossesReproduces by spores Produced in a capsule
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True Mosses The SporophyteWhen operculum is shed peristome teeth are exposedPeristome regulates spore dispersal
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MossesTrue mossesSphagnum (Peat) mossesGranite mosses0
Sphagnum (Peat) MossesGrow in BogsBogs may cover huge areasMoss absorbs waterWater is acidified by the moss0
Sphagnum (Peat) MossesUnique leaf structure allows leaves to absorb large quantities of waterMoss absorbs waterWater is acidified by the moss0
Sphagnum (Peat) MossesUnique leaf structure allows leaves to absorb large quantities of waterMoss absorbs waterWater is acidified by the moss0
Sphagnum (Peat) MossesThick deposits of partially decomposed moss accumulatesDeposits are known at Peat0
Sphagnum and Peat are Harvested for Agriculture and Fuel0
Acid pH and capacity for water retention make sphagnum a popular soil amendment0
Sphagnum (Peat) MossesPeat has been harvest for centuries and burned for fuel0
Bodies buried in Sphagnum Bogs are well preservedAcid/anoxic environment retards bacterial growth0Short video Mummies Frozen in Time
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Land Plants fall into two major groupsNon vascular Vascular0
Vascular PlantsVascular tissue Some are seedlessOthers produce seeds
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Seedless Vascular PlantsWhisk FernsClub/Spike Mosses0HorsetailsFerns
Whisk Ferns0
Whisk FernsDichotomous branching stems0
Whisk FernsNo roots underground rhizome only0
Whisk FernsNo leaves- stem appendages are called enations
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Whisk FernsSporangia attached laterally on stem
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Seedless Vascular PlantsWhisk FernsClub/Spike Mosses0HorsetailsFerns
Plants with leaves have either microphylls or megaphyllsMicrophylls have a single vascular strandMegaphylls have a network of vascular strands0
Club and Spike MossesStems, roots and leaves Leaves are microphylls0
Club and Spike MossesSporangia produced in axils of leaves
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Club and Spike MossesSporangia produced in axils of leaves
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Seedless Vascular PlantsWhisk FernsClub/Spike Mosses0HorsetailsFerns
Horsetails and Scouring Rushes0
Horsetails and Scouring RushesStems jointedBranches whorled around stem0
Horsetails and Scouring RushesStems ribbedSilica in cells of the epidermis0
Horsetails and Scouring RushesLeaves small Reduced megaphyllsWhorled at nodesUnderground rhizome with Roots0
Horsetails and Scouring RushesSpores produced in terminal strobilous0
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Seedless Vascular PlantsWhisk FernsClub/Spike Mosses0HorsetailsFerns
Ferns0
Ferns show great diversity of form0
Ferns have megaphylls0
Young fern megaphylls are called fiddleheads 0
Fern stems grow vertically or horizontally0
Spores are produced on underside of megaphylls0
Spores are produced in clusters called Sori0
Sori of many ferns are covered by an indusium0
Sori of many ferns are covered by an indusium0
Seedless Vascular Plants0