Is Prochlorococcus the most abundant photosynthetic organism?
['The marine cyanobacterium Prochlorococcus is the smallest and most abundant photosynthetic organism on Earth.', 'The marine cyanobacterium Prochlorococcus is the numerically dominant photosynthetic organism in the oligotrophic oceans, and a model system in marine microbial ecology.', 'The marine cyanobacterium Prochlorococcus is the most abundant photosynthetic organism in oligotrophic regions of the oceans.', 'The oceanic picoplankton Prochlorococcus - probably the most abundant photosynthetic organism on our planet - can grow at great depths where light intensity is very low.']
['Yes, the marine cyanobacterium Prochlorococcus is the smallest and most abundant photosynthetic organism on Earth.']
['yes']