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Rotifers have a _________ that looks like a rotating wheel and is used to propel the animal through the water and move food particles toward the mouth.

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Answer:

Rotatory organ

Step-by-step explanation:

They have a mastax, that's one of the main characteristics of rotifers.

The mastax has a tube with a very complex shredder and rotatory organ to drag water at high speed just to catch food and oxygen dissolved in water.

The rotatory organ and other organs of the rotifers use cilia to drag the water full of oxygen and food.