NEET BIOLOGY

Detailed explanation-1: -Neutrophils are granulocytes. The granules in granulocytes are actually lysosome and Golgi bodies. These are the chief phagocytic cells of the body and engulf the microbes by phagocytosis, so neutrophils are also called soldiers of the body.

Detailed explanation-2: -Neutrophils engulf microbes only as they move over them, in a ‘vacuum-cleaner’ type of behaviour. This context-dependent nature of phagocytosis by neutrophils should be of particular relevance to human infectious diseases, especially for the early phase of encounter with microbes new to the host.

Detailed explanation-3: -So the correct option is “Neutrophils".

Detailed explanation-4: -Neutrophils provide the first line of defense of the innate immune system by phagocytosing, killing, and digesting bacteria and fungi.

Detailed explanation-5: -Phagocytosis is central to the microbicidal function of neutrophils. Pathogens are initially engulfed into a plasma membrane-derived vacuole, the phagosome, which proceeds to acquire degradative properties by a complex process termed maturation.