Question:
The available biomass for the consumption, to heterotrophs is ----------------.
The available biomass for the consumption, to heterotrophs is ----------------.
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Subtract the producers' own respiration loss from gross productivity.
Updated On: Nov 12, 2026
- Gross primary productivity
- Net primary productivity
- Secondary productivity
- Net secondary productivity
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Gross primary productivity (GPP) is the total organic matter fixed by producers in photosynthesis.
Step 2: Net productivity
Producers use part of GPP in their own respiration. \(\text{NPP} = \text{GPP} - \text{R}\).
Step 3: Availability
The remaining NPP is the biomass available to herbivores and decomposers, which are heterotrophs.
Step 4: Conclusion
The biomass available to heterotrophs is net primary productivity.
Final Answer:
Net primary productivity is the biomass available to heterotrophs. \[ \boxed{\text{(B) }\text{Net primary productivity}} \]
Gross primary productivity (GPP) is the total organic matter fixed by producers in photosynthesis.
Step 2: Net productivity
Producers use part of GPP in their own respiration. \(\text{NPP} = \text{GPP} - \text{R}\).
Step 3: Availability
The remaining NPP is the biomass available to herbivores and decomposers, which are heterotrophs.
Step 4: Conclusion
The biomass available to heterotrophs is net primary productivity.
Final Answer:
Net primary productivity is the biomass available to heterotrophs. \[ \boxed{\text{(B) }\text{Net primary productivity}} \]
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