Correct option is C
The amount of nutrients, such as carbon, nitrogen, phosphorus, calcium, etc., present in the soil at any given time, is referred to as the standing state. It varies in different kinds of ecosystems and also on a seasonal basis. Secondary productivity is defined as the rate of formation of new organic matter by consumers. Each trophic level has a certain mass of living material at a particular time called as the standing crop. The standing crop is measured as the mass of living organisms (biomass) or the number in a unit area. Net primary productivity is the available biomass for the consumption to heterotrophs (herbiviores and decomposers).
English
50 Questions
200 Marks
45 Mins