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Multiple Choice
In an ecosystem, which trophic level do primary consumers occupy?
A
Third trophic level
B
First trophic level
C
Second trophic level
D
Fourth trophic level
Verified step by step guidance
1
Understand the concept of trophic levels: Trophic levels represent the hierarchical positions in a food chain, where each level is defined by how organisms obtain their energy.
Identify the role of primary consumers: Primary consumers are organisms that feed on producers (usually plants or algae) to obtain energy.
Recognize the position of producers: Producers, such as plants and algae, occupy the first trophic level as they produce energy through photosynthesis.
Determine the position of primary consumers: Since primary consumers feed on producers, they occupy the second trophic level.
Conclude that primary consumers are at the second trophic level, as they directly consume the energy produced by organisms at the first trophic level.