Assertion :Thrombin is necessary to initiate blood coagulation. Reason: Thrombin helps in the formation of thromboplastins.

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

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

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If the assertion is true but the reason is false

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If both the assertion and reason are false

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Solution

The correct option is C If the assertion is true but the reason is false
During blood clotting an enzyme thromboplastin or thrombokinase is released by the platelets, it is also present in the brain, lungs etc
Thrombokinase converts prothrombin to thrombin.
So, the correct answer is C'If the assertion is true but the reason is false'

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Similar questions

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

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