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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Platelets or thrombocytes are the cytoplasmic fragments derived from the megakaryocytes of the Bone arrow. Platelets along with coagulation factors stop bleeding by forming a clot. When bleeding occurs the blood oozes out from an injury, the platelets disintegrate and release coagulation factor thromboplastin that initiates clotting. Hence Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
So, the correct answer is 'Option A.

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