Question

The given pyramid shows the relative biomass of zooplanktons and phytoplanktons in a marine ecosystem.
The biomass of the zooplanktons is higher than that of the phytoplanktons because

• A. the zooplanktons convert energy more efficiently
• B. the zooplanktons have a shorter life cycle than the phytoplanktons
• C. the phytoplanktons are individually much smaller than the zooplanktons
• D. the phytoplanktons have an extremely high turnover rate.

Answer 1

The correct option is D the phytoplanktons have an extremely high turnover rate.

The producer in the ocean or aquatic ecosystem producers is phytoplankton have a short lifespan and turn over and have lower mass than zooplankton.

So the correct option is 'the phytoplanktons have an extremely high turnover rate.'