Multiple Choice
Which of the following descriptions about the organization of an ecosystem is correct?
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52. Ecosystems
Introduction to Ecosystems
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In any ecosystem, there are always more:
A
apex predators than herbivores
B
producers than consumers
C
decomposers than producers
D
secondary consumers than producers
Verified step by step guidance1
Understand the roles of organisms in an ecosystem: Producers (e.g., plants, algae) create energy through photosynthesis, consumers (e.g., herbivores, carnivores) consume other organisms for energy, and decomposers (e.g., fungi, bacteria) break down dead organic matter.
Recall the energy pyramid concept: Energy decreases as it moves up trophic levels. Producers form the base of the pyramid, followed by primary consumers (herbivores), secondary consumers (carnivores), and apex predators at the top.
Recognize that producers are the most abundant because they are the primary source of energy for all other organisms in the ecosystem. Without a large base of producers, higher trophic levels cannot be supported.
Compare the abundance of other groups: Consumers (herbivores, carnivores) rely on producers for energy, so their populations are smaller. Decomposers, while important, do not outnumber producers because they depend on the availability of dead organic matter.
Conclude that the correct answer is 'producers than consumers,' as producers are always more abundant to sustain the energy needs of the ecosystem.
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