Assertion : Lymphocyte are the largest corpuscles.
Reason : Nucleus of lymphocyte is large and kidney shaped .

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

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Lymphocytes are the largest corpuscles." To evaluate this, we need to know the sizes of different types of white blood cells (leukocytes).

2. **Comparing Sizes of White Blood Cells**: Lymphocytes typically range in size from about 7 to 16 micrometers. In comparison, monocytes, which are another type of white blood cell, are larger, measuring about 15 to 20 micrometers. Therefore, lymphocytes are not the largest corpuscles.

3. **Understanding the Reason**: The reason given is that "the nucleus of lymphocyte is large and kidney-shaped." We need to examine the structure of lymphocytes to determine the accuracy of this statement.

4. **Analyzing the Nucleus of Lymphocytes**: The nucleus of a lymphocyte is actually small and typically spherical, not large and kidney-shaped. This contradicts the reason provided.

5. **Conclusion**: Since both the assertion and the reason are incorrect, we conclude that the correct option is that both the assertion and reason are false.

**Final Answer**: Both assertion and reason are false.

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