Cell Structure
Picoeukaryotes can be either autotrophic and heterotrophic, and usually contain a minimal number of organelles. For example, Ostreococcus tauri, an autotrophic picoeukaryote belonging to the class Prasinophyceae, contains only the nucleus, one mitochondrion and one chloroplast, tightly packed within a cell membrane. Members of a heterotrophic class, the Bicosoecida, similarly contain only two mitochondria, one food vacuole and a nucleus.
Read more about this topic: Picoeukaryote, Characteristics
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