Question

Read the following $(A-D)$:-
A. RBCs are the most abundant of all the cells in blood.
B. A healthy adult man has an average $5$ Billions to $5.5$ Billions of RBCs $m{m}^{-3}$ of blood.
C.RBCs are formed in liver in the adults.
D.RBCs are devoid of nucleus in most of the mammals and are biconcave in shape.
How many of the above statement are incorrect?

• A. $4$
• B. $3$
• C. $2$
• D. $1$

Answer 1

The correct option is C $2$

A. RBCs are the most abundant of all the cells in blood because of their function to transport oxygen to the tissues.

B. A healthy adult man has on an average 4.5 to 5.9 million mm${}^{-3}$ of RBCs in blood.

C. In the adults, the RBCs are formed in the red bone marrow.

D. In most of the mammals, the RBCs are devoid of the nucleus and are biconcave in shape.

Hence, the correct answer is '2'