Question

From the following terms, choose one term which includes the other four.
A. Plasma
B. Platelets
C. Blood
D. RBC
E. WBC

Answer 1

Blood is a connective tissue containing blood plasma and corpuscles that flows through the heart and blood vessels continuously and acts as a medium of transport of materials throughout the body. The plasma of the blood is obtained by centrifugation of the fresh blood mixed with an anticoagulant.

Complete answer:
Blood is seen to have two components – a. plasma and b. formed elements. The formed elements can be further classified into three types – RBC, WBC, Platelets. All the above elements are present in the blood.
Hence the option C is correct.
Plasma is a blood component that contains water, inorganic ions, plasma proteins ( albumin, globulin, prothrombin, fibrinogen), non-protein but does not contain WBC, RBC, Platelet.
Hence option A is incorrect.

Platelets are the substances that are concerned with blood clotting that originates from the bone marrow. The presence of plasma, blood, RBC, and WBCs is not observed under the platelets.
Hence option B is incorrect.

RBC also known as the erythrocytes contains hemoglobin but does not contain the other elements mentioned above.
Hence option D is incorrect.

WBC also known as leukocytes can be divided into two types – Granulocytes ( Eosinophil, Basophil, Neutrophil) and Agranulocyte (Lymphocyte and Monocyte) but does not contain the other elements that are mentioned above.
Hence the option E is incorrect.

Note:
RBCs are the blood cells carrying oxygen from the lungs to different tissues and carbon dioxide from different tissues to the lungs. WBCs are concerned with allergic reactions, phagocytosis, and the body immune system. Plasma contains prothrombin, fibrinogen that assists blood clotting. Globulin protein of plasma forms immunoglobulin that acts as antibodies.