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