X - In PS-I,Chlorophyll a has an absorption p | vedclass

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(D) In $PS-I$ (Photosystem $I$),the reaction center chlorophyll $a$ has an absorption peak at $700\, nm$,which is why it is also known as $P700$.In $P

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$X$ and $Y$ are incorrect.

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(D) In $PS-I$ (Photosystem $I$),the reaction center chlorophyll $a$ has an absorption peak at $700\, nm$,which is why it is also known as $P700$.In $PS-II$ (Photosystem $II$),the reaction center chlorophyll $a$ has an absorption peak at $680\, nm$,which is why it is also known as $P680$.Therefore,statement $X$ is incorrect because $PS-I$ absorbs at $700\, nm$,and statement $Y$ is incorrect because $PS-II$ absorbs at $680\, nm$.Thus,both statements $X$ and $Y$ are incorrect.

$X -$ In $PS-I$,Chlorophyll $a$ has an absorption peak at $680\, nm$.
$Y -$ In $PS-II$,it has an absorption maximum at $700\, nm$.

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$X -$ In $PS-I$,Chlorophyll $a$ has an absorption peak at $680\, nm$.$Y -$ In $PS-II$,it has an absorption maximum at $700\, nm$.