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Cells of the protist choanoflagellate clade closely resemble sponge choanocyte cells. … The bilaterally symmetrical animals are further divided into deuterostomes (including chordates and echinoderms) and two distinct clades of protostomes (including ecdysozoans and lophotrochozoans) (Figure 2). How do choanoflagellates reproduce? With their characteristic collar surrounding the flagella, choanoflagellate cellsRead More →

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Many dinoflagellates are photosynthetic, but a large fraction of these are in fact mixotrophic, combining photosynthesis with ingestion of prey (phagotrophy and myzocytosis). In terms of number of species, dinoflagellates are one of the largest groups of marine eukaryotes, although substantially smaller than diatoms. Are diatoms and dinoflagellates photosynthetic? AmongRead More →