Question

why are protozoans known as important link for aquatic 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.

Answer 2

Answer:

Protozoans are known to the important link for aquatic food chain because they consume and digest algae as a predator, which help to decrease the chances of eutriphication of the surrounding water.

Protozoa are found in abundant number in an ocean, and they act as a prime source for the completion of aquatic food chain.

For example: Phytoplankton is eaten by zooplankton and it is eaten by crustaceans.

They stablises the food chain and maintain an adequate level of energy in the food chain. That is why it is necessary for aquatic food chain.