Which photosystem is inactive in the red drop | vedclass

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Question

(C) The red drop effect refers to the sharp decrease in the quantum yield of photosynthesis when the wavelength of light is increased beyond $680 \ nm

Vedclass · Accepted Answer

$PS-II$

Vedclass · Answer

(C) The red drop effect refers to the sharp decrease in the quantum yield of photosynthesis when the wavelength of light is increased beyond $680 \ nm$.At wavelengths greater than $680 \ nm$,only $PS-I$ is functional,while $PS-II$ becomes inactive.Since $PS-II$ is required for the photolysis of water and the production of $O_2$,its inactivity leads to a significant drop in the rate of photosynthesis,which is known as the red drop effect.

Which photosystem is inactive in the red drop effect?

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