27-plantevo1A - plants Moss life cycle Plants(gametophytes...

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K: Plantae = The Land Plants
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What is a plant? Multicellular autotroph? With complex tissues?
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And blue pigment, phycocyanin
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From green algae - early clues Chlorophylls Carotenoids Starch Cellulose
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Alternation of generation
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From Charophycean green algae 1. rosette terminal complexes (RTCs) in plasma membrane for making cellulose 2. Special peroxisomal enzymes for toxic oxygen products
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chlorophytes charophytes/land plants From Charophycean green algae 3. Type of flagellar root base 4. phragmoplasts (for cytokinesis) (4 bundles) microtubules microtubules
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Charophycean algae retain zygote
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Alternation of generation mitosis mitosis mitosis mitosis mitosis
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Walled spores made in sporangium/ia Gametes made in gametangium/ia Male: antheridium/ia Female: archegonium/ia
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Apical meristems 33-6 33-7
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Non-vascular
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Unformatted text preview: plants Moss life cycle Plants (gametophytes) can be hermaphroditic/bisexual monoecious dioecious Plants (sporophytes) can be homosporous heterosporous Cuticle with flavonoids Rhizoids Air pore Major innovations P: Bryophyta = mosses Sphagnum P: Hepatophyta = liverworts P: Anthocerophyta = hornworts Seedless vascular plants xylem phloem P: Lycopodiophyta stems rhizoids Early vascular plant (fossil): Rhynia First leaves P: Lycopodiophyta Lycopodium = ground pine/cedar homosporous http://www.youtube.com/watch?v=F3ChXba3dus Selaginella = spike moss heterosporous heterosporous too P: Pteridophyta = ferns Azolla = mosquito fern Fern life cycle indusium Innovations/ changes “Big” leaves croziers = fiddleheads Horsetails = scouring rushes...
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27-plantevo1A - plants Moss life cycle Plants(gametophytes...

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