The biomass pyramids for phytoplankton and trees in their respective environments are
a.
both inverted
b.
the same
c.
opposite
d.
both normal

I think the correct answer from the choices listed above is option C. The biomass pyramids for phytoplankton and trees in their respective environments are opposite. A pyramid of biomass shows the total mass of organisms at each stage of a food chain. In general, all producers have a higher biomass than the primary consumer, so a pyramid will always be produced.