A) Detritus
B) Humus
C) Standing state
D) Standing crop
Correct Answer: D
Solution :
The amount of living matter present in an ecosystem in its different trophic levels is called standing crop. It is expressed in the form of number or biomass per unit area. Biomass is measured as either fresh weight or dry weight. Dry weight is preferred over fresh weight as it is not liable to change with moisture content. Standing crop indicates the productivity and luxurience of growth.
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