In a mature ecosystem, which organism group typically has the greatest biomass?

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Multiple Choice

In a mature ecosystem, which organism group typically has the greatest biomass?

In ecosystems, energy stored as biomass is greatest at the base of the food web, where producers—plants and other photosynthesizers—build up the most organic matter. Plants capture sunlight and convert it into stored energy, forming a large, standing stock of biomass, especially in mature systems like forests or grasslands that have established and persistent plant communities. Because only a portion of energy moves up to each higher trophic level and much is lost as heat, biomass diminishes as you move from producers to primary consumers to secondary consumers. Decomposers play a crucial role in recycling nutrients, but the standing biomass they hold is usually not larger than that of the producers in a stable, mature ecosystem. So, producers (plants) have the greatest biomass in a mature ecosystem.

In ecosystems, energy stored as biomass is greatest at the base of the food web, where producers—plants and other photosynthesizers—build up the most organic matter. Plants capture sunlight and convert it into stored energy, forming a large, standing stock of biomass, especially in mature systems like forests or grasslands that have established and persistent plant communities.

Because only a portion of energy moves up to each higher trophic level and much is lost as heat, biomass diminishes as you move from producers to primary consumers to secondary consumers. Decomposers play a crucial role in recycling nutrients, but the standing biomass they hold is usually not larger than that of the producers in a stable, mature ecosystem.

So, producers (plants) have the greatest biomass in a mature ecosystem.

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