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OpenStudy (anonymous):

Which protist is the most widely known form of marine plankton and is thought to have given rise to plants? A. euglena B. green algae C. diatoms D. plasmodia

OpenStudy (anonymous):

Fun fact: all of those groups have plastids, even the one that doesn't photosynthesise! It had photosynthetic ancestors :)

OpenStudy (faman39):

Its B green algae

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