Multiple Choice
Most of the sunlight that reaches Earth __________.
52. Ecosystems
Introduction to Ecosystems
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What is the amount of chemical energy in a consumer's food that is converted to its own new biomass over a period of time called?
A
Primary production
B
Production efficiency
C
Net ecosystem production
D
This question cannot be answered without knowing at which trophic level the organism feeds.
E
Secondary production
Verified step by step guidance1
Understand the concept of secondary production: It refers to the amount of chemical energy in a consumer's food that is converted into its own new biomass over a period of time.
Recognize that secondary production is a measure of energy transfer in an ecosystem, specifically focusing on consumers such as herbivores, carnivores, and decomposers.
Differentiate secondary production from primary production, which is the creation of organic compounds by producers (like plants) through photosynthesis.
Consider the role of production efficiency, which is the percentage of energy stored in assimilated food that is not used for respiration and is converted into new biomass.
Acknowledge that net ecosystem production is the total biomass accumulation in an ecosystem, which includes both primary and secondary production, minus the energy used in respiration by all organisms in the ecosystem.
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