Assertion : All diploic bones of body are haemopoietic.
Reason : Red bone marrow is present in the diploic bone.
(a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion
(b) If both Assertion & Reason are true but Reason is not a correct explanation of the Assertion
(c) If Assertion is True but the Reason is false
(d) If both Assertion & Reason are false

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

To solve the question regarding the assertion and reason about diploic bones and their hematopoietic nature, we will analyze both statements step by step.

### Step 1: Understand the Assertion
The assertion states that "All diploic bones of the body are haemopoietic."
- **Definition of Diploic Bones**: Diploic bones are a type of spongy bone found in the skull, particularly between the inner and outer layers of the cranial bones.
- **Hematopoietic Function**: Hematopoietic refers to the capability of producing blood cells, which typically occurs in red bone marrow.

### Step 2: Analyze the Assertion
- **Truth of Assertion**: Diploic bones are not primarily responsible for hematopoiesis. Hematopoiesis occurs in red bone marrow, which is mainly found in long bones (like the femur) and not in the diploic bones of the skull.
- **Conclusion**: Therefore, the assertion is **false**.

### Step 3: Understand the Reason
The reason states that "Red bone marrow is present in the diploic bone."
- **Presence of Red Bone Marrow**: While red bone marrow is indeed responsible for hematopoiesis, it is not present in diploic bones. Instead, red bone marrow is typically found in long bones and some flat bones, but not in the diploic bones of the skull.

### Step 4: Analyze the Reason
- **Truth of Reason**: Since red bone marrow is not present in diploic bones, the reason is also **false**.

### Step 5: Conclusion
Both the assertion and the reason are false. Therefore, the correct answer is:
**(d) If both Assertion & Reason are false.**

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