Name the gas excreted by plants during the night time.

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C O_{2}

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O_{2}

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N O_{2}

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Solution

The correct option is B $C O_{2}$
During the day, excess oxygen gas produced by photosynthesis is released through the stomata. Carbon dioxide produced by respiration is normally used up during photosynthesis. At night, however, as photosynthesis slows, carbon dioxide is not used up as fast as it is produced, and it is released as a waste product.
Therefore, the correct answer is option B.

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Similar questions

Name a waste gas excreted by plants only during the day time and the gas they excrete only during the night time.

C O_{2}

Name a waste gas released by the plants (a) only during the day time, and (b) only during the night time.

O_{2}

C O_{2}

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