The mass of living material at a trophic level at a particular time is called:

Options

A. gross primary productivity
B. standing state
C. net primary productivity
D. standing crop

Answer

D

Explanation

The total dried biomass of living organisms present at a trophic level at a particular time is known as standing crop. Standing state is the amount of inorganic nutrients present at any time in the soil or water of ecosystem. The gross primary productivity is the total organic matter synthesised by producers during photosynthesis per unit time and area.