BIO 115 Lecture Notes - Lecture 8: Integument, Phragmoplast, Streptophyta
8. PLANTS
Archaeplastida
oGlaucophyta
oRhodophyta
oGreen Algae
oPlantae
Plantae
oMonophyletic group
Red algae, green algae, land plants and glaucophyte algae
oCells with a cellulose wall
oPlastids with chlorophyll a and b
Photosynthesis stuff
oFood storage in the form of starch
Rhodophyta (red Algae)
oMarine habitats
oCell walls composed of cellulose
oNo flagella
oAlmost all are photosynthetic
Green plants include both green algae and land plants
oLand plants were first multicellular organisms that could live with most of their
tissue exposed to the air
Green plants
oPhotosynthetic in freshwater habitats, land plants are key photosynthesizers in
terrestrial
oGreen algae considered protists but studied along with land plants
Clade Viridiplantae
oSynapomorphies
Chlorophyll a & b, cellulose cell wall, food stored as starch
oClade Chlorophyta
Green algae
Zygotic Meiosis Sporic Meiosis
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Streptophyte Clade
oPrimary lineage of Viridiplantae
oSynapomorphies allowed for the development of complexity and life on land
oSynapomorphies: phragmoplast and rosette proteins and tissue differentiation
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Document Summary
Archaeplastida: glaucophyta, rhodophyta, green algae, plantae. Red algae, green algae, land plants and glaucophyte algae: cells with a cellulose wall, plastids with chlorophyll a and b. Photosynthesis stuff: food storage in the form of starch. Rhodophyta (red algae: marine habitats, cell walls composed of cellulose, no flagella, almost all are photosynthetic. Green plants include both green algae and land plants: land plants were first multicellular organisms that could live with most of their tissue exposed to the air. Green plants: photosynthetic in freshwater habitats, land plants are key photosynthesizers in terrestrial, green algae considered protists but studied along with land plants. Chlorophyll a & b, cellulose cell wall, food stored as starch: clade chlorophyta. Streptophyte clade: primary lineage of viridiplantae, synapomorphies allowed for the development of complexity and life on land, synapomorphies: phragmoplast and rosette proteins and tissue differentiation. Phragmoplast: microtubular assemblages; plasmodesmata forms and allows for intercellular communication; initiates cell division; multicellular; orients the er.
