Multiple Choice
How can you determine an ecosystem's biodiversity?
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48. Ecology
Introduction to Ecology
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Which of the following statements is true about trophic levels in an ecosystem?
A
Primary consumers occupy the first trophic level.
B
Producers are found at the first trophic level.
C
Tertiary consumers are at the second trophic level.
D
Decomposers are considered primary producers.
Verified step by step guidance1
Understand the concept of trophic levels: Trophic levels represent the hierarchical levels in an ecosystem, comprising different organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
Identify the first trophic level: Producers, such as plants and algae, occupy the first trophic level. They are autotrophs that produce energy through photosynthesis or chemosynthesis.
Recognize the role of primary consumers: Primary consumers are herbivores that feed on producers. They occupy the second trophic level, not the first.
Clarify the position of tertiary consumers: Tertiary consumers are carnivores that feed on secondary consumers. They are typically found at the fourth trophic level, not the second.
Understand the role of decomposers: Decomposers, such as fungi and bacteria, break down dead organic material. They are not considered primary producers, as they do not produce energy but recycle nutrients back into the ecosystem.
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