Assertion: Dark reaction is purely enzymatic reaction. Reason: It occurs only in absence of light.

Question

Assertion: Dark reaction is purely enzymatic reaction. Reason: It occurs only in absence of light. (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

Tardigrade Admin · Accepted Answer

Assertion is true but reason is false. Photosynthesis is actually oxidation reduction process in which water is oxidised and CO2 is reduced to carbohydrates. Assimilatory power ATP and NADPH2 are required for reduction of CO2. But this reduction is independent o f light i.e occurs in presence or absence of light but production o f assimilatory power is light dependent. This reaction is called light reaction or Hill’s reaction and the light independent phase is an enzymatic reaction called dark reaction. It occurs is stroma of chioroplast and is enzyme radiated one. It was first of all established by F.F. Blackman and so is also called Blackman's reaction. During this process CO2 is fixed to carbohydrate.

Q. Assertion : Dark reaction is purely enzymatic reaction. Reason : It occurs only in absence of light.

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

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

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion : Dark reaction is purely enzymatic reaction.
Reason : It occurs only in absence of light.