The answer is PHAGOCYTOSIS. Phagocytosis refers to the process by which a cell engulf a material or another cell. In unicellular organisms, phagocytosis is a mode of feeding while in eukaryotes, phagocytosis is the mean by which the defensive agents of the immune system attack foreign bodies which are found in the system.
<span> B. conjugation is a process used by prokaryotes to exchange genetic materials with each other. It is usually to provide advantageous genes to another bacterium such as antibiotic resistance trait.</span>