Question

Large number of white blood corpuscles are
A. Eosinophils
B. Basophils
C. Neutrophils
D. Monocytes

Answer 1

Hint: Blood is an important body fluid which consists of blood cells or corpuscles which are suspended in the plasma. The blood cells or corpuscles are also known as erythrocytes and are produced through the hematopoietic process. The blood contains two important types of cells which are red blood cells and white blood cells.

Complete answer:
The blood cells found in blood are of two types which are erythrocytes or red blood cells and leukocytes or white blood cells. The red blood cells are the cells that are responsible to carry the respiratory gases such as oxygen and carbon dioxide. The color of the blood cells are due to the presence of iron-containing protein that is called hemoglobin.

The white blood cells are also known as the leukocytes and they are the cells of the immune or defense system of the body. The main function of the leukocytes is involvement in defending the body against infectious diseases and foreign toxic materials. There exist different types of leukocyte cells which perform specific roles in the immune system.

White blood cells or leukocytes are divided into two types on the basis of granules present in the cytoplasm, which are granulocytes and agranulocytes cells. The granulocyte cells are of three types- eosinophils, basophils and neutrophil cells. The agranulocyte cells are of two types that are monocytes and lymphocytes.

The eosinophils are responsible for protecting the body against parasites and certain types of infectious pathogens. The eosinophils form about 1 to 3% of the total leukocytes. The basophil cells make up about 0.5% to 1% of all the circulating white blood corpuscles.
The neutrophil cells are the most abundant white blood corpuscles as they represent about 40 to 70% of all the white blood cells.

The monocyte cells are the largest type of white blood cell and represent about 2% to 10% of the white blood corpuscles. The lymphocytes cells are the main cells of the lymph system. They form about 18% to 30% of the circulating white blood cells.

Hence, the correct answer is option (C).

Note: The white blood corpuscles include many different types of cells and each one of them are responsible for distinct responses to counteract pathogenic conditions and infections. The neutrophils are the most abundant leukocytes. The neutrophils are the white blood corpuscles which are found in large numbers in the bloodstream among all other types of white blood corpuscles.