Assertion: Platelets play an important role in blood clotting.
Reason: In the blood oozing from an injury, the platelets disintegrate and release thromboplasm that initiates clotting.

Options

A. If both Assertion and Reason are true and the Reason son is the correct explanation of the Assertion.
B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
C. lf Assertion is true, but Reason is false.
D. If both Assertion and Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that platelets play an important role in blood clotting. This is a well-established fact in biology. Platelets, also known as thrombocytes, are crucial components of the blood that help prevent excessive bleeding when an injury occurs.

2. **Analyzing the Reason**: The reason given is that in the blood oozing from an injury, the platelets disintegrate and release thromboplasm, which initiates the clotting process. This statement is also accurate. When there is an injury, platelets are activated and release various substances that contribute to the clotting cascade.

3. **Connecting Assertion and Reason**: The assertion and reason are closely related. The role of platelets in blood clotting (assertion) is directly explained by the process they undergo during an injury (reason). The disintegration of platelets and the release of thromboplasm are critical steps in the clotting mechanism.

4. **Conclusion**: Since both the assertion and reason are correct, and the reason provides a valid explanation for the assertion, we can conclude that both statements are true and related.

5. **Final Answer**: The correct answer is option A: Both assertion and reason are correct statements, and the reason explains the assertion correctly.

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