appreciate the process of nutrition in Paramoecium
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When the cilia is present around, the mouth region of paramoecium move, back and forth. They sweep the food particles present in water into the mouth of paramoecium. This is the first step in the nutrition of paramoecium which is called ingestion and is followed by digestion, absorption, assimilation and egestion
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Paramecia feed on microorganisms like bacteria, algae, and yeasts.
To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove, and inside the mouth opening.
The food passes through the cell mouth into the gullet.
Food is ingested by cytosome lying at the bottom of buccal cavity.
At first cilia of oral groove move very fast that drives current of water with food particles toward vestibule.
Ciliary tracts of vestibule direct the food particles into buccal cavity.
Larger food materials are rejected whereas smaller food materials are selected and ingested through cytosome into cytopharynx.
The food now gradually collects at the bottom of cytopharynx into a membranous vesicle which is later released off as food vacuole.
Please refer the image for more information.
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