Specific place of an organism in a food chain, mass of living material (biomass) at each trophic level at a particular time.
Detailed Answer :
A specific place of organisms in the food chain is known as their trophic level. Producers belong to the first trophic level, herbivores to the second and carnivores to the third. Each trophic level has a certain mass of living material at a particular time called as the standing crop. Standing crop is the quantity or total weight of dried biomass of the organism which is present in a specific location at a particular time. It is measured as the mass of living organisms (biomass) or the number in a unit area.
