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Question

The major role in maintaining food and energy levels in an ecosystem is played by __________


A

Decomposers

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B

Autotrophs

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C

Heterotrophs

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D

Parasites

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Solution

The correct option is B

Autotrophs


Organisms in an ecosystem that produce biomass from inorganic compounds are called autotrophs. In almost all cases, these are photosynthetically active organisms (plants, cyanobacteria and a number of other unicellular organisms)


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