Freshwater Taxonomic Certification Practice Test

Question: 1 / 400

What is the role of detritivores in freshwater ecosystems?

They compete with fish for resources

They break down dead organic matter and recycle nutrients

Detritivores play a crucial role in freshwater ecosystems by breaking down dead organic matter, such as fallen leaves, dead plants, and animal remains. This decomposition process is vital for nutrient cycling, as it transforms complex organic materials into simpler substances that can be further utilized by other organisms within the ecosystem. By feeding on this decaying matter, detritivores contribute to the breakdown of organic material, releasing nutrients back into the water and soil, which in turn supports the growth of primary producers like aquatic plants and phytoplankton. This function aids in maintaining the health and balance of the ecosystem, ensuring that essential nutrients are available for other organisms, thereby promoting biodiversity and ecosystem stability.

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They produce oxygen through photosynthesis

They actively prey on smaller invertebrates

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