Answer:
Phagocytosis .
Step-by-step explanation:
Phagocytosis is the process by which a cell engulfs large particle as defense or food.
In the process of phagocytosis the cell extends its plasma membrane traps the particle or antigen into a phagosome.
Inside the phagosome several lytic enzyme act on the particle and thus digests it.
Macrophages in our body are good exmples of phagocytic cells .
Unicellular organism like Amoeba also carries phagocytosis for food.