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Bio Lab Wksht & HW Questions 29

Bio Lab Wksht & HW Questions 29 - 24 C-5 Kingdom...

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24 C-5. Kingdom Chlorophyta (green algae): The Chlorophyta is an important and diverse group of protists. Much of the diversity arises in the vegetative body form (thallus) possessed by members of this phylum, which include unicellular, colonial, filamentous, and parenchymatous types. Members of this phylum undergo sexual life cycles with zygotic or sporic meiosis . Many characters, including the types of pigments the individuals possess (namely chlorophyll a, b and accessory pigments), suggest that the most likely ancestor of land plants was a member of this phylum. Three groups are recognized, based largely on subcellular characters (we will look at two of the three). a. Chlorophytes This group contains most of the green algae. Typically, these organisms inhabit freshwater environments, although some species are found in marine and terrestrial environments as well. Chlorophytes may be unicellular, colonial, or multicellular, and many form a mutualistic association with fungi known as lichens (see Fungi lab).
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