Hypochytriales Absorptive heterotrophs. Grow as chytridlike unicells; some also grow as hyphae. Typically parasitic or saprobic. Chrysophyceae (golden algae) Most freshwater. Have a unique feeding cup. Mixotrophy common; some taxa are strictly phagotrophic heterotrophs. Algal taxa possess 1 or 2 plastids per cell.
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