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ALGAE231 - Jim Bidlack BIO 1304 GENERAL BOTANY Lecture 31...

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Jim Bidlack - BIO 1304 GENERAL BOTANY Lecture 31 - Algae (Part II) I. Additional characteristics and uses of algae A. Generalized structure - thallus (plant body without true roots, stems, or leaves) B. Algae account for about 50% of oxygen released into atmosphere by photosynthesis C. High levels of N and P cause dense mat of algae 1. Much oxygen is consumed during respiration - fish die 2. Red tides synthesize a poison D. Blue-green algae fix nitrogen II. Continuation of survey of algae A. Last time 1. Kingdom Monera: Class Cyanobacteriae (Class Cyanobacteria (cyano)) 2. Kingdom Protista: Phylum Euglenophytya (euglena), Phylum Chromophyta (Class Chrysophyceae and Class Bacillariophyceae (silica)), and Phylum Dinophyta (pirate ship) B. This time 1. Kingdom Protista: Phylum Rhodophyta (red), Phylum Chlorophyta (chlorophyll), Phylum Chromophyta (Class Phaeophyceae (fart)) C. Phylum Rhodophyta (red algae - red): mostly marine - use agar for food 1. Eucaryotic, cellulosic walls, complex life cycles 2. Found at great depths 3.
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