Multiple Choice
Which of the following best describes the amount of matter that cycles through a food web in an ecosystem?
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52. Ecosystems
Energy Flow Through Ecosystems
Multiple Choice
Which of the following best describes the direction of energy flow through an ecosystem?
A
From secondary consumers to primary consumers to producers to decomposers
B
From primary consumers to producers to decomposers to secondary consumers
C
From producers to primary consumers to secondary consumers to decomposers
D
From decomposers to secondary consumers to primary consumers to producers
Verified step by step guidance1
Understand the concept of energy flow in an ecosystem: Energy flows through an ecosystem in a linear fashion, starting from the sun and being captured by producers (autotrophs) through photosynthesis. Producers convert solar energy into chemical energy stored in organic molecules.
Identify the role of producers: Producers, such as plants and algae, are the foundation of the energy flow. They create energy-rich compounds that serve as food for other organisms in the ecosystem.
Examine the role of primary consumers: Primary consumers (herbivores) feed directly on producers, transferring the energy stored in producers to themselves.
Analyze the role of secondary consumers: Secondary consumers (carnivores or omnivores) feed on primary consumers, further transferring energy up the food chain.
Understand the role of decomposers: Decomposers break down dead organic matter from producers, primary consumers, and secondary consumers, recycling nutrients back into the ecosystem but not directly contributing to the linear energy flow.
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