Answer:
(A) greater than standing crop of fish
Explanation:
Biomass -
It is the mass of the living organisms in a particular area of the ecosystem at a particular time . It even includes the animals , plants and microorganisms .
It is the total mass of the community or the average mass per unit area .
The biomass of the phytoplankton are always more than the biomass of the fish .
Hence the correct statement would be (A) greater than standing crop of fish .