Question

Assertion :The regulation of RBC production is accompanied by the kidneys. Reason: Erythropoietin hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds up the development of RBC's.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Some specialized cells present in kidney secretes erythropoietin when blood circulating to the kidney have low levels of oxygen because these cells are sensitive to low oxygen levels. This hormone circulates to the red bone marrow, where it increases stem cells mitosis and speeds up the development of RBC's. As the number of RBC increases the level of oxygen in the kidney is maintained.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.