[A] : Hydrostatic pressure in blood forces water and other solutes of glomerulus into Bowman's capsule.
[R]: Kidneys regulate the blood pH.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

To solve the assertion-reason question, we will analyze both statements step by step.

### Step 1: Understand the Assertion
The assertion states: "Hydrostatic pressure in blood forces water and other solutes of glomerulus into Bowman's capsule."

- **Explanation**: This statement is true. The hydrostatic pressure generated by the blood flow in the glomerulus is indeed responsible for pushing water and solutes through the walls of the capillaries into the Bowman's capsule. This process is known as ultrafiltration and is a crucial first step in the formation of urine.

### Step 2: Understand the Reason
The reason states: "Kidneys regulate the blood pH."

- **Explanation**: This statement is also true. The kidneys play a vital role in maintaining the acid-base balance of the body by regulating the levels of hydrogen ions (H+) and bicarbonate (HCO3-) in the blood. They can excrete excess H+ ions into the urine, which helps to maintain the blood pH within a normal range.

### Step 3: Determine the Relationship Between Assertion and Reason
Now we need to determine if the reason provided is an explanation for the assertion.

- **Analysis**: While both statements are true, they describe different functions of the kidneys. The assertion focuses on the process of ultrafiltration in the nephron, while the reason addresses the kidneys' role in regulating blood pH. They are independent processes occurring in the kidneys and do not directly explain one another.

### Conclusion
Both the assertion and the reason are true, but the reason does not explain the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation of the assertion.

### Final Answer
- Both Assertion and Reason are true, but Reason is not the explanation of Assertion.

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