Answer:

Amoeba obtains nutrition through the process of phagocytosis, where it engulfs food particles such as bacteria or algae into its cell body through pseudopodia. The food particles are then enclosed within a food vacuole, where enzymes break down the food into simpler molecules. The nutrients are then absorbed into the cytoplasm, while the waste material is expelled out of the cell through exocytosis. The diagram of the process is as follows:

[Diagram not supported in text format]

1. Amoeba extends pseudopodia around the food particle.
2. Pseudopodia engulf the food particle and form a food vacuole.
3. Enzymes are secreted into the food vacuole to break down the food particle.
4. Nutrients are absorbed into the cytoplasm, while waste material is expelled through exocytosis.