Why does rate of photosynthesis decrease at higher lighjt intensities ?What plays a protective role in such situations?

Why does the rate of photosynthesis decrease at higher temperatures?

Why is the overall rate of photosynthesis higher per unit light received in flashes than continously?

Why does the rate of a reaction increase with rise in temperature?

Why the rate of respiration is higher in an athelete?

Why the rate of physical adsorption decreases with the rise of temperature ?

Why does the conductivity of a solution decrease with dilution?

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Chlorine plays important role in dark reactions of photosynthesis. Reason: Chlorine plays an important role in process of seed germination.

Why does physisorption decrease with increase in temperature ? Explain.