Info

Phylum

Body form

Photosynthetic pigments

Form of food storage

Cell-wall composition

Chlorophyta (green algae)

unicellular, colonial, filamentous, multicellular

chlorophylls a and b, carotenoids

starch

polysaccharides, cellulose

Phaeophyta (brown algae)

multicellular

chlorophylls a and c, carotenoids, fucoxanthin

laminarin (a polysaccharide)

cellulose with alginic acid

Rhodophyta (red algae)

multicellular

chlorophyll a, phycobilins, carotenoids

starch

cellulose or pectin, many with calcium carbonate

Bacillariophyta (diatoms)

unicellular, colonial

chlorophylls a and c, carotenoids, fucoxanthin, some with none

laminarin, leucosin (an oil)

pectin, many with silicon dioxide

Dinoflagellata unicellular (dinoflagellates)

chlorophylls a and c, carotenoids, xanthophyll, some with none

starch

cellulose

Chrysophyta (golden algae)

unicellular, colonial

chlorophylls a and c, carotenoids, fucoxanthin, xanthophyll, some with none

laminarin, leucosin

cellulose

Euglenophyta (euglenoids)

unicellular

chlorophylls a and b, carotenoids, many with none

paramylon (a starch)

no cell wall, protein-rich pellicle

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