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Rhodophyta: Red Algae Rhodophyta: Red Algae • • • • • • Eukaryotic Pigments: chlorophyll a & b, phycoerythrin Food storage: iodine negative starch Cellulose cell walls No flagellated cells Many marine species often used as thickeners due to their highly mucilaginous nature: agar, carageenans • Predominantly marine group • Few FW representatives, especially locally • Not necessarily ‘red’ in appearance • Complex life cycles Batrachospermum Bangia atropurpurea Characteristic of cool, clear streams
