DIRECTION: Match column I with column II and select the correct answers using the code given below the columns
Column-I Column-II
(A) RBC (p) clotting
(B) WBC (q) transportation
(C) Platelets (r) carries O₂ & CO₂
(D) Plasma (s) protects the body

(a) (A)-(s)

Correct Answer: (d) (A)-(r), (B)-(s), (C)-(p), (D)-(q)

Explanation:

RBC: Red blood cells (RBCs), also known as erythrocytes, are the component of blood that allows the transportation of oxygen and removal of carbon dioxide from the body. RBCs are made in the bone marrow and usually live for 120 days.

WBC: White blood cells (WBCs), also known as leukocytes, are the component of the blood and immune system that helps the body to fight against infectious disease and entry of foreign materials inside the body. It forms chemicals and antibodies (a protein) to fight the infection.

Platelets: Platelets, also known as thrombocytes, are the component of blood whose main function is to prevent bleeding through coagulation of blood (clotting of blood) in a cut or wound. It releases thread-like fibers to form mash-like structures and clots.

Plasma is the liquid component of blood which consists of water, salts, enzymes, ions, and proteins. Plasma makes up about 55% of total blood volume; the remaining 45% is cells and platelets.

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