alleryStart learning →Productivity within an ecosystem is defined as the percentage of entering energy incorporated into:
ABiomass at a trophic level
BHeat lost to the air
CWater held in the soil
DLight reflected upward
Answer & Solution
Correct answer: A. Biomass at a trophic level
1. Productivity measures what is captured rather than what is lost.
2. Productivity within an ecosystem can be defined as a percentage of energy entering it.
3. That percentage is the energy incorporated into biomass.
4. The biomass is measured in a particular trophic level.
_Source: OpenStax Biology 2e (CC BY 4.0), Ch 46 'Ecosystems', sections 46.1-46.3_
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