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Question
During daylight hours the rate of photosynthesis is higher than that of respiration a ratio of O2 produced to that of consumed is about
During daylight hours the rate of photosynthesis is higher than that of respiration a ratio of O2 produced to that of consumed is about
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Solution
The correct option is B 10:1
In green plants both photosynthesis and respiration occurs. In relatively bright light photosynthesis is the dominant process (meaning that the plant produces more food than it uses during respiration). At night, or in the absence of light, photosynthesis essentially ceases and respiration is the dominant process; the plant consumes food (for growth and other metabolic processes). During day light, photosynthesis is the dominant process as a result amount of O2 released during day time is ten times greater than the amount of O2 utilized in day time. Because, respiration is more dominant in night time than day time. Thus, option B is correct.
In green plants both photosynthesis and respiration occurs. In relatively bright light photosynthesis is the dominant process (meaning that the plant produces more food than it uses during respiration).
At night, or in the absence of light, photosynthesis essentially ceases and respiration is the dominant process; the plant consumes food (for growth and other metabolic processes).
During day light, photosynthesis is the dominant process as a result amount of O2 released during day time is ten times greater than the amount of O2 utilized in day time. Because, respiration is more dominant in night time than day time. Thus, option B is correct.
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