What should an ecologist measure in order to construct a pyramid of biomass for an ecosystem? a. the biomass in each trophic level of the food web b. the total mass of all the organisms in a representative area of the ecosystem c. the total mass of all the organisms in the ecosystem d. the number of organisms in each trophic level of the food web

Option B is correct. An ecologist measure the total mass of all the organisms in a representative area of the ecosystem in order to construct a pyramid of biomass for an ecosystem.

Pyramid of Biomass:

Hence, Option A, C, and D can be eliminated.

Therefore, we can say that an ecologist measure the total mass of all the organisms in a representative area of the ecosystem in order to construct a pyramid of biomass for an ecosystem.

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When constructing a pyramid of biomass, the ecologist will produce a presentation of the total mass off all the organisms in a representative area of the ecosystem. This type of ecological pyramid is determined by collecting organisms in each trophic level separately and finding their dry weight. Determining biomass in terms of dry weight is more accurate. The pyramid has a larger shape at the bottom and a diminishing shape as it goes to the top.

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