Potted plants are not allowed to remain in room of a patient during night as

They consume

O_{2}

at night.

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They produce

C O_{2}

at night.

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They release

O_{2}

only during day.

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They are unable to photosynthesize and deplete

O_{2}

of the room at night.

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Solution

The correct option is D They are unable to photosynthesize and deplete $O_{2}$ of the room at night.
Light has some indirect effect on photosynthesis. For example, it affects by regulating the movement (opening and closing) of stomata. Stomata are closed in low light and open in high light intensity. Closed stomata restrict the entry of CO $_{2}$ and decrease the rate of photosynthesis.
Potted plants, stomata closed at night leads to depleting of O $_{2}$ and they are unable to perform photosynthesis.
Hence, the correct answer is 'They are unable to photosynthesis and deplete O $_{2}$ of the room at night'.

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