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  1. The greatest biomass of autotrophs in the oceans is that of
    1. sea grasses and slime moulds
    2. free floating microalgae, cyanobacteria and nanoplankton
    3. benthic brown algae,coastal red algae and daphnids
    4. benthic diatoms and marine viruses
Correct Option: B

The greatest biomass of autotrophs in the oceans is that of free floating microalgae, cyanobacteria and nanoplankton.



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