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b112_Lecture_29 - Multicellular, ,starchforstorage...

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2/12/2008 1 BIOL 112 – Chapter 29 The Non seed Plants Defining Kingdom Plantae Multicellular, photosynthetic autotrophs Cell walls of cellulose, starch for storage Terrestrial, obtain nutrients from soil, oxygen d O f i h h and CO 2 from air through stomata Produce lignin and sporopollenin Internal fertilization (embryophytes) Alternation of generations
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2/12/2008 2 Bryophytes Represent the most “primitive” embryophytes Male gametophytes antheridia Female gametophytes archegonia Sporophytes sporangia Water required for fertilization No lignin Three Divisions: Bryophyta, Hepatophyta, Anthocerophyta Bryophyta Mosses Form mats of tightly packed plants No true stems, leaves or roots Both gametophyte and sporophyte are large Sphagnum ecologically important Sphagnum Bog
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2/12/2008 3 Antheridia Antheridium Archegonia Hepatophyta Liverworts Inconspicuous, lobe shaped thallus Almost never far from water
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