Mode of Nutrition in Paramecium
- Paramecium is a tiny unicellular animal.
- It feeds on microorganisms like bacteria, algae and yeasts.
- Like amoeba, paramecium also exhibits holozoic nutrition which is a category of the heterotrophic mode of nutrition.
- However they have Celia that helps them to engulf the food through the oral groove.
Following steps involved in the Nutrition of Paramecium
- Paramecium uses its hair-like structure called Cilia to sweep the food particles from water and put them into an oral groove.
- The food is ingested with a little surrounding water to form a food vacuole.
- In Paramecium food is digested in the food vacuole by digestive enzymes.
- The enzymes from surrounding cytoplasm enter into the food vacuole and break down the food into small and soluble molecules by chemical reaction.
- The digested food present in the food vacuole of paramecium is absorbed directly into the cytoplasm of the paramecium cell by diffusion.
- The digested food just spreads out from the food vacuoles into the whole paramecium cell.
- After absorption of food the food vacuole disappears.
- Food absorbed in paramecium cell is used to obtain energy through respiration.
- The remaining part of the absorbed food is used to make parts of paramecium cells which lead to the growth of paramecium.
- The undigested food is removed through anal pore in paramecium.