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Parasitic and holozoic nutrition are two distinct modes of heterotrophic nutrition , meaning both involve obtaining nutrients from external sources. However, they differ significantly in how they acquire and process food, and their relationship with other organisms. Holozoic nutrition is the mode of heterotrophic nutrition that involves ingestion, digestion, absorption and assimilation of solid and liquid material. This type of nutrition is exhibited by amoeba that takes in complex substances and converts them into simpler substances. Nutrition in an Amoeba occurs through a process called phagocytosis where the entire organism pretty much engulfs the food it plans on eating up. The mode of nutrition in amoeba is known as holozoic nutrition . It involves the ingestion, digestion and egestion of food material. Holozoic Nutrition is the mode of nutrition in which the food is taken in solid or liquid form from the outside and is digested inside the body. the steps involved holozoic nutrition are ingestion ,digestion ,absorption ,assimilation and egestion.
