The greatest biomass of autotrophs in the world’s oceans is that of:
AFree-floating microalgae, cyanobacteria and nanoplankton
BBenthic diatoms and marine viruses
CBenthic brown algae, coastal red algae and daphnids
DSea-grasses and slime-molds
Correct answer
A. Free-floating microalgae, cyanobacteria and nanoplankton
Explanation
The correct answer is Free-floating microalgae, cyanobacteria and nanoplankton.