Ajay was reading a biology textbook, trying to understand the structure of different cells.
He found the below diagram in the book and argued that this must be a mistake.
He showed the diagram to his friend Arshiya and asked do you think this diagram is fine?
Arshiya said it looks fine, but as far as i know all cells must contain nucleus, this one doesn't have any nucleus.
They opened their BYJU'S tab to understand the structure of RBCs.
What according to you did they find out?

The diagram is incorrect, it is not showing RBC

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The diagram is correct but they missed the labeling of nucleus

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The diagram is correct, mature RBC do not contain nucleus

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The diagram is showing immature RBC, that do not contain any nucleus

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Solution

The correct option is C The diagram is correct, mature RBC do not contain nucleus
When red blood cells (erythrocytes) are produced in the bone marrow, they initially do contain a nucleus. In maturation the cell will extrude its nucleus, a process called enucleation. When the red blood cells enter circulation, they don't have a nucleus.

The lack of a nucleus is an adaptation of the cell to be better equipped for its task. The lack of a nucleus allows it to carry more oxygen. The cell is also more flexible, improving its ability to travel through capillaries that are about half the size of the cell itself.

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