Question

why Protozoa act as link in food chain

Answer 1

As components of the micro- and meiofauna, protozoa are an important food source for microinvertebrates. Thus, the ecological role of protozoa in the transfer of bacterial and algal production to successive trophic levels is important. As predators, they prey upon unicellular or filamentous algae, bacteria, and microfungi. Protozoan species include both herbivores and consumers in the decomposer link of the food chain.

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Answer 2

Here is your answer....

the ecological role of protozoa in the transfer of bacterial and algal production to successive trophic levels is important. ... Protozoan species include both herbivores and consumers in the decomposer link of the food chain. They also control bacteria populations and biomass to some extent.

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