Question

Sort the different processes involved in holozoic nutrition in Amoeba.

• A. Ingestion
• B. Digestion
• C. Absorption
• D. Assimilation
• E. Egestion

Answer 1

• During ingestion, Amoeba pushes out the pseudopodia to encircle the food and engulfs it forming a food vacuole.
• Digestive juices are secreted into the food vacuole. They act on the food and break it down into simpler substances.
• In absorption, the nutrients from the digested food material are absorbed into the cell’s cytoplasm, leaving behind the undigested particles.
• Assimilation is the process of obtaining energy from the absorbed food molecules.
• The undigested residue of the food is expelled outside by the vacuole.