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The biomass available for consumption by the herbivores and the decomposers is called
A
Gross primary productivity
B
Net primary productivity
C
Secondary productivity
D
Standing crop
Detailed Solution
Gross primary productivity (GPP) is the rate of production of organic matter during photosynthesis.
A considerable amount of GPP is used by the plants themselves in respiration (R).
Net primary productivity: NPP = GPP − R
NPP is the biomass available for consumption by the heterotrophs (herbivores and decomposers).
Secondary productivity is the rate of formation of new organic matter by consumers, and standing crop is the mass of living material at a trophic level at a given time.
Hence the answer is net primary productivity.
A considerable amount of GPP is used by the plants themselves in respiration (R).
Net primary productivity: NPP = GPP − R
NPP is the biomass available for consumption by the heterotrophs (herbivores and decomposers).
Secondary productivity is the rate of formation of new organic matter by consumers, and standing crop is the mass of living material at a trophic level at a given time.
Hence the answer is net primary productivity.