👉 Leucocyte is a type of white blood cell that plays an important role in the immune system. It consists of two parts, the cytoplasm and the plasma membrane. The cytoplasm contains enzymes and other proteins involved in the process of phagocytosis, which involves the leucocytes engulfing pathogens or foreign substances. The plasma membrane is responsible for the storage of nutrients, hormones, and other molecules necessary for the survival of the leucocytes. Leucocytes can be