In which of the following is the rate of phot | vedclass

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(C) The phenomenon of $Red \, Drop$ was observed by $R. \, Emerson$ and $C.M. \, Lewis$ in $1943$. They found that the quantum yield of photosynthesis

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Red light more than $680 \, nm$

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(C) The phenomenon of $Red \, Drop$ was observed by $R. \, Emerson$ and $C.M. \, Lewis$ in $1943$. They found that the quantum yield of photosynthesis significantly decreases when plants are exposed to monochromatic light at wavelengths greater than $680 \, nm$ (far-red region of the spectrum). This drop occurs because light at these wavelengths is insufficient to excite both Photosystem $I$ and Photosystem $II$ simultaneously,which is necessary for efficient photosynthesis.

In which of the following is the rate of photosynthesis decreased,a phenomenon known as red drop?

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