The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called:
Secondary production
Primary production
Gross primary production
Net primary production
Primary production is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis.' The text distinguishes this from 'productivity,' which is the rate of biomass production. It further defines secondary productivity as the rate of formation of new organic matter by consumers , , .
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