The rate at which photosynthetic primary producers incorporate energy from the sun is called:
ATrophic transfer efficiency
BGross primary productivity
CNet primary productivity
DTotal biomass accumulation
Answer & Solution
Correct answer: B. Gross primary productivity
1. Two productivity measures differ by what the producers themselves use.
2. Primary producers capture energy from the sun by photosynthesis.
3. The rate at which they incorporate that energy is called gross primary productivity.
4. Net primary productivity subtracts what the producers use for themselves.
_Source: OpenStax Biology 2e (CC BY 4.0), Ch 46 'Ecosystems', sections 46.1-46.3_
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