Question

Mammalian erythrocytes are

• A. Circular
• B. Biconcave
• C. Non-nucleated
• D. All of the above

Answer 1

The correct option is D All of the above

The circular mammalian erythrocyte is synthesized in the bone marrow. After synthesis it undergoes a process called enucleation in which the nucleus is removed. The absence of a nucleus allows the red blood cells to contain more hemoglobin and hence carry more oxygen. Absence of nucleus is also responsible for its distinctive biconcave shape that helps in diffusion

So, the correct answer is 'All of the above'