Assertion: Colosturm is a very efficient means of transferring immunity to a newborn.
Reason: IgM from mother's milk protects the baby from the respiratory infection usually affecting in young age.

Options

A. If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertin and Reason are true but the reason is not the correct explanation of the assertion, then mark (20.
C. If Assertion is true but Reason is false, then mark (3).
D. If both Assertion and Reason are false. Then mark (4).

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Colostrum is a very efficient means of transferring immunity to a newborn." We need to evaluate if this statement is true.

2. **Definition of Colostrum**: Colostrum is a thick, yellowish fluid produced by a nursing mother in the first 24 to 48 hours after childbirth. It is rich in antibodies and nutrients essential for the newborn.

3. **Role of Colostrum in Immunity**: Colostrum contains a high concentration of immunoglobulins, particularly IgA (Immunoglobulin A), which plays a crucial role in providing passive immunity to the newborn. This helps protect the infant from infections during the early months of life.

4. **Duration of Protection**: The antibodies transferred through colostrum can provide protection to the newborn for about six months, making it an effective means of transferring immunity.

5. **Evaluating the Reason**: The reason states that "IgM from mother's milk protects the baby from respiratory infections usually affecting young age." Here, we need to analyze the accuracy of this statement.

6. **Identifying the Antibodies in Colostrum**: While colostrum does provide immunity, it primarily contains IgA antibodies, not IgM. IgA is responsible for mucosal immunity, while IgM is not the primary antibody found in colostrum.

7. **Conclusion**: Since the assertion is true (colostrum does effectively transfer immunity) and the reason is false (IgM is not the main antibody in colostrum), we conclude that the correct answer is that the assertion is true, but the reason is false.

**Final Answer**: The correct answer is that the assertion is true, but the reason is false.

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