Question

Consider the following statements $(A - C)$ each with one or two blanks. (A) $(1)$ are the most abundant cells ($60-65$ per cent) of the total $WBCs$ and $(2)$ are the least ($0.5-1$ per cent) among them. (B) Platelets are cell fragments produced from $(3)$. (C) During clot formation, fibrins are formed by the conversion of inactive $(4)$ in the plasma by the enzyme $(5)$. Which one of the following options, gives the correct fill ups for the respective blank numbers from $(1)$ to $(5)$ in the statements?

• A. $(1)$-Neutrophils, $(2)$-basophils, $(4)$-fibrinogens, $(5)$-thrombin
• B. $(3)$-mast cells, $(4)$-thrombokinase, $(5)$-prothrombin
• C. $(3)$-megakaryocytes, $(4)$-prothrombin, $(5)$-thrombin
• D. $(1)$-Basophils, $(2)$-neutrophils, $(3)$-reticulocytes

Answer 1

Answer: (A)

$(1)$-Neutrophils, $(2)$-basophils, $(4)$-fibrinogens, $(5)$-thrombin

Answer 2

Blood platelets are cell fragments rather than true cells, they are formed from megakaryocytes (very large cells of bone marrow).