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Assertion : The process of clotting can ...

Assertion : The process of clotting can occur in absence of all cellular elements except platelets
Reason : Vitamin K is essential for blood clotting.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Activated platelets are essential for blood clotting because several of the cascade reactions take place on the surface of platelets. Vitamin K is essential for production of prothrombin. Prothrombin and many plasma clotting factors are produced in the liver. The liver requires vitamin K to produce prothrombin and several other clotting factors.
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NCERT FINGERTIPS-BODY FLUIDS AND CIRCULATION-Body Fluids And Circulation
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