객관식
Which of the following is an example of a cultural ecosystem service provided by diverse ecosystems?
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48. Ecology
Introduction to Ecology
객관식
Which term describes a single essential nutrient that limits productivity in an ecosystem?
A
Trophic level
B
Limiting nutrient
C
Primary consumer
D
Keystone species
검증된 단계별 안내1
Understand the concept of a limiting nutrient: A limiting nutrient is an essential nutrient that is in short supply and restricts the growth or productivity of organisms in an ecosystem. It is often a key factor in determining the carrying capacity of the environment.
Compare the given terms: Analyze each term provided in the question to determine which one aligns with the definition of a limiting nutrient.
Evaluate 'Trophic level': A trophic level refers to the position an organism occupies in a food chain, such as producer, primary consumer, or secondary consumer. This term does not describe a nutrient.
Evaluate 'Primary consumer': A primary consumer is an organism that feeds on producers (plants or algae). This term refers to an organism, not a nutrient.
Evaluate 'Keystone species': A keystone species is an organism that has a disproportionately large impact on its ecosystem relative to its abundance. While important, this term does not describe a nutrient. The correct term is 'Limiting nutrient,' which directly matches the definition provided.
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