Final answer:
C. Lymphocytes are the cells among the options that are not granulocytes; neutrophils, eosinophils, and basophils are. Lymphocytes lack granular cytoplasm and are vital to the adaptive immune response.
Step-by-step explanation:
Among the options listed, lymphocytes are the type of white blood cells that are not granulocytes. Neutrophils, eosinophils, and basophils are categorized as granulocytes due to their lobed nuclei and the presence of granular inclusions within their cytoplasm. These granules stain specifically with certain dyes, and they are typically involved as first-responders to injury or infection. In contrast, lymphocytes are classified as agranulocytes; they possess a simple, non-lobed nucleus and lack the granular cytoplasm seen in granulocytes. Lymphocytes, which include B and T cells, are vital to the adaptive immune response.
Lymphocytes and monocytes, the other type of agranulocytes, also respond to infection or injury but through different mechanisms such as antibody production and differentiating into macrophages and dendritic cells. Therefore, the correct answer to the question 'Each of the following are granulocytes except' is C. lymphocytes.