If the total amount of energy from light converted into chemical energy in this square meter of tundra is 200 g,what is the amount of autotrophic respiration?
A)200 g
B)100 g
C)85 g
D)15 g
E)0.5 g

Question

Quizplus · Accepted Answer

In ecosystems, the total amount of energy converted into chemical energy by photosynthesis is known as Gross Primary Production (GPP). Autotrophic respiration (R) is the portion of this energy that autotrophs (primarily plants) use for their metabolic activities. Net Primary Production (NPP) is the energy that remains after this respiration and is available for growth and reproduction. It is calculated as NPP = GPP - R. If the question implies that 200 g represents the GPP and asks for the amount of autotrophic respiration, without additional information on the NPP or the specific respiration rate, it's not possible to directly calculate R from the given data. However, if we assume a scenario where the NPP is known or implied to be a certain fraction of GPP (which is not directly provided here), we would need that specific information to accurately answer. In the absence of such details, any answer would be speculative. However, typically, a significant portion of GPP is used in autotrophic respiration, often around half in many ecosystems, but this can vary widely.

If the Total Amount of Energy from Light Converted into Chemical