Assertion :RBC production is regulated by kidneys. Reason: Erythropoietin hormone produced by kidneys reaches red bone marrow where it increases stem cells mitosis and speed up development of RBCs.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The regulation of RBC production is accompanied by the hormone erythropoietin, which is secreted by the juxtaglomerular cells of kidney. This hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds the development of RBC.

So, the correct answer is 'A'.

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