Plantae-Adaptations

Plantae-Adaptations - Kingdom Plantae classification...

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Kingdom Plantae classification Division: Rhodophyta = Red Algae reef builders coralline algae mostly marine Chlorophyll. a & d; floridean starch Division: Phaeophyta = Brown Algae Large marine algae Kelp Sargasso chlorophyll a & c; mannitol Division: Chlorophytae = Green Algae Lichens Zoochlorellae chlorophyll a & b; starch ancestors to higher plants
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Green algae ancestral role Chlorophyll a & b True starch Starch grains inside chloroplast Whiplash flagella asexual and sexual phases haploid and diploid stages Unicellular and multicellular species cell specialization in large colonies gamete specialization in large colonies Chlamydomonas Pandorina Pleodorina Volvox
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Oxygen Revolution 20% O 2 in atom 15% 10 % 5% Time b.y.a. 3 2 1 0 Land plants Animals Multicellular algae Eukaryotic algae blue-green algae
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group Vas. tiss sporang spores sperm embry seed habitat Rhodophyta 0 0 0 swim 0 0 H 2 O Phaeophyta 0 0 0 swim 0 0 H 2 O Chlorophytae 0 0 0 swim 0 0 H 2 O Bryophyta 0 + 1 swim + 0 Wet L psilophytes + + 1 swim + 0 Wet club mosses + cone 1,2 swim + 0 Wet horsetails + cone 1,2 swim + 0 Wet ferns + sorus 1 swim 0 Wet Gymnosperms + Sor con 2 air + Nak e Dry Angiosperms + Anth 2 animal + flow dry
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Kingdom Plantae cont Evolution of higher plants: two ideas Hypothesis 2 Green algae Bryophytes Tracheophyta Green algae Bryophytes Tracheophyta Hypothesis 1.
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Division Bryophyta mosses, Liverworts, Hornworts Live in moist habitats Swimming sperm Homosporous single gametophyte Gametophyte is dominant (n) Embryo is parasitic (2n) Lacks xylem and phloem Generally small plants
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Division Tracheophyta ferns, conifers, ginkgoes flowering plants Moist to dry habitats Swimming sperm to air born to animal borne pollen Homosporous
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This note was uploaded on 12/09/2009 for the course BIO 200 taught by Professor Herreid during the Spring '07 term at SUNY Buffalo.

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Plantae-Adaptations - Kingdom Plantae classification...

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