X - Rod cells' function is twilight (scotopic | vedclass

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(D) The human eye contains two types of photoreceptor cells: rods and cones.$1$. Rod cells contain the pigment rhodopsin and are highly sensitive to l

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$X$ and $Y$ are correct.

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(D) The human eye contains two types of photoreceptor cells: rods and cones.$1$. Rod cells contain the pigment rhodopsin and are highly sensitive to low light intensities,making them responsible for twilight or scotopic vision.$2$. Cone cells contain photopsins and are responsible for color vision and daylight or photopic vision.Since both statements $X$ and $Y$ accurately describe the physiological functions of these cells,the correct option is $D$.

$X -$ Rod cells' function is twilight (scotopic) vision.
$Y -$ Cone cells' function is daylight (photopic) vision.

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$X -$ Rod cells' function is twilight (scotopic) vision.$Y -$ Cone cells' function is daylight (photopic) vision.