Explain why algae are not a clade, and the problems with grouping algae. Why do some phycologists consider Apicomplexans to be algae, despite them being non-photosynthetic?
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Algae are a polyphyletic group, which means they have multiple evolutionary origins. This creates problems in grouping algae because they are not a natural, cohesive group, and their classification is based on shared characteristics that have evolved independently Show more…
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