The Total Biomass of Photosynthetic Autotrophs Present in an Ecosystem

Question

The total biomass of photosynthetic autotrophs present in an ecosystem is known as
A)gross primary productivity.
B)standing crop.
C)net primary productivity.
D)secondary productivity.
E)trophic efficiency.

Accepted Answer

Standing crop refers to the total biomass of photosynthetic autotrophs present in an ecosystem. Gross primary productivity refers to the total amount of energy captured by photosynthesis, net primary productivity is the amount of energy left after respiration and lost to the environment, secondary productivity refers to the amount of energy produced by heterotrophs, and trophic efficiency is the ratio of energy passed from one trophic level to the next.