The shape of RBC is _____.

oval

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square

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elliptical

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biconcave

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Solution

The correct option is D
biconcave

The mature human red blood cell is small and devoid of the nucleus. The shape of RBC can be described as biconcave disc. It is the biconcave disc shape that helps in increasing its surface area. It is flexible and assumes a bell shape as it passes through extremely small blood vessels.

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