Match List I with List II : List I List II A Primary production 1 kcal m⁻² yr⁻¹ B Primary productivity 2 kcal m⁻² C Annual NPP of whole biosphere 3 55 billion tons D Annual NPP of oceans 4 170 billion tons Choose the correct answer from the options given below :

Step-by-step solution

Primary production is the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis. It is expressed in terms of weight ( g m⁻² ) or energy ( kcal m⁻² ). Primary productivity is the rate of biomass production. It is expressed in terms of g m⁻² yr⁻¹ or kcal m⁻² yr⁻¹ . The annual net primary productivity of the whole biosphere is approximately 170 billion tons (dry weight) of organic matter. The annual net primary productivity of oceans is 55 billion tons. Thus, the