Question

Which of the following is an agranulocyte?
A. Basophil
B. Neutrophil
C. Lymphocyte
D. Eosinophil

Answer 1

Hint: White blood cells are also called immune cells. Mainly WBC is categorized into two categories: Granulocyte and agranulocyte. Granulocytes have granular cytoplasm while agranulocytes do not have granular cytoplasm. Lymphocytes do not have granular cytoplasm.

Complete answer:
Blood contains corpuscles which have their specific functions. White blood cells also called leukocytes perform a very important function to provide immunity against various antigens. White blood cells production occurs in bone marrow and they are stored in the blood and lymph tissues. Some of them have a lifespan of usually 1 to 3 days.
WBCs are mainly classified as granulocytes and agranulocytes on the basis of presence of granules in them. Monocytes and lymphocytes come in the category of agranulocytes while eosinophils, neutrophils, and basophils are called granulocytes as they contain granules in their cytoplasm.
Lymphocytes help in the production of antibodies to fight against foreign particles. They are also called natural killer cells. They contain granules in it.
Neutrophils kill and digest bacteria and fungi. Basophils secrete specific chemicals that help to control the body's immune response. Eosinophil kills parasites and cancer cells.
From the above information we can say that lymphocytes are agranulocytes.

So, the correct answer is option C. 

Note: Monocytes provide innate immunity that means they are present by birth in vertebrates including mammals. The shape of monocytes is unilobar, which makes them one of the type mononuclear leukocytes. 18 to 42 percent of leukocytes are lymphocytes. Number of WBC may be affected when the person is suffering from disease or infection. Cancer of the blood and weak immune system affects their presence in the blood.