briefly explain how unicellular animals undergo the process of digestion
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Some single-celled organisms, such as protista, sequester food particles in food vacuoles, where enzymes break them down. Simple multicellular organisms, such as hydra and flatworms, have one-opening digestive systems. ... Waves of muscular contraction called peristalsis help to move the food along.
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A unicellular organism is an organism that consists of a single cell. This means all life processes, such as reproduction, feeding, digestion, and excretion, occur in one cell. Amoebas, bacteria, and plankton are just some types of unicellular organisms. They are typically microscopic and cannot be seen with the naked eye.
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