BIOL 2P93 Lecture Notes - Lecture 3: Chlorophyll, Autotroph, Chlorophyta
22 Jan 2016
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Algae general: kingdom protista + defined: group of aquatic, photosynthetic, eukaryotic organisms ranging from unicellular to multicellular forms, generally possessing chlorophyll but lacking true roots, stems and leaves characteristic of terrestrial plants . 15 algal phyla by physical + molecular character: chorophyll, accessory pigments, food reserve products, cell coverings, reproductive features + cellular organization. Vary 30k 1mil species = it"s a head scratcher for sure for algal diversity. Common algal phyla: cyanophyta (blue green algae), rhodophyta (red algae), euglenophyta (eugleniods), chlorophyta (green algae), pyrrophyta (dinoflagellates). Protist groups seen are photosynthetic algae: green algae significant as vlp b/c green algae ancestor. Note: heterotropic protists (feed on organic materials in other plants + animals (i. e. slime molds)). Oldest fossils eukaryotic algae b/c size + forms like. Grypania spiralis: rarest fossils on 2-d ribbon-like coils. Bedding plane compressions, carbonaceous films, or faint colorations + 1/2m length.
