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

Options

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

Answer

C

Explanation

(a) Standing state - The amount of inorganic nutrients present any time in soil/water of the ecosystem.
(b) Net primary productivity - It is the total organic matter stored by producers per unit area/volume per unit time.
(c ) Standing crop - It is the amount of living biomass in an ecosystem.
(d) Gross primary productivity - It is the total organic matter synthesized by the producers in the process of photosynthesis per unit per unit time.