Assertion :- Mast cells are undiferntiated cells of connective tissue proper.
Reason :- Mast cells modified to from other cells of connective tissue proper.

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 assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
- **Assertion**: "Mast cells are undifferentiated cells of connective tissue proper."
- **Evaluation**: This statement is **false**. Mast cells are not undifferentiated; they are specialized cells found in connective tissue. They are derived from basophils and are involved in immune responses, containing granules filled with histamine and heparin.

### Step 2: Analyze the Reason
- **Reason**: "Mast cells modified to form other cells of connective tissue proper."
- **Evaluation**: This statement is also **false**. Mast cells do not modify to form other types of connective tissue cells. Instead, they are a specific type of cell (modified basophils) and do not differentiate into other connective tissue cells.

### Step 3: Conclusion
- Since both the assertion and the reason are false, we can conclude that the correct answer to the question is that both statements are false.

### Final Answer
Both the assertion and the reason are false.

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