Euglenoids Phylum Dinophyta—The
Dinoflagellates Phylum Cryptophyta—The
Cryptomonads Phylum Prymnesiophyta (Haptophyta)—The Haptophytes Phylum Charophyta—The
Stoneworts Human and Ecological Relevance of the Algae Diatoms Other Algae Algin
Minerals and Food Agar
Other Members of Kingdom Protista Phylum Myxomycota—The Plasmodial Slime Molds
Phylum Dictyosteliomycota—The Cellular Slime Molds Human and Ecological Relevance of the Slime Molds Phylum Oomycota—The Water Molds
Human and Ecological Relevance of the Water Molds Summary
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After an introduction and summary of the features of members of Kingdom Protista, this chapter discusses the phyla of algae, slime molds, and water molds. Brief discussions of the life cycles of representatives of the principal phyla are included.
First, the Chlorophyta (green algae) are discussed, with Chlamydomonas, Ulothrix, Spirogyra, and Oedogonium being explored in some detail; mention is also made of Chlorella, desmids, Acetabularia, Volvox, and Ulva. The Chromophyta (yellow-green algae, golden-brown algae, diatoms, and brown algae) are taken up next. Then the Euglenophyta (euglenoids) are briefly examined, and Phylum Dinophyta (dinoflagellates) is explored. The role of members of Phylum Dinophyta in red tides and bioluminescence is noted. After a brief overview of Phyla Cryptophyta, Prymnesiophyta, and Charophyta, the chapter summarizes differences between the phyla of algae in Table 18.1, which lists food reserves, chlorophyll pigments, and flagella. This is followed with a digest of the human and ecological relevance of the algae. The chapter concludes with a brief examination of the slime molds and water molds.
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