Which protist would most likely be phytoplankton?
A. Euglena (a unicellular alga)
B. Polysiphonia (a red seaweed)
C. Plasmodium falciparum (the pathogen that causes malaria)
D. Phytophthora infestans (the pathogen that causes late-blight)
E. Kelp (a brown seaweed)
Answer: A
Biology & Microbiology
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