No. Green plants respire the whole day but only photosynthesize during the day time. Photosynthesis require sunlight respiration can take place at night
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No, i don't agree.
 photosynthesis can occur only in the presence of sunlight. That means at the day time only. But a living cell respires the whole day for the oxidation of glucose to get energy. It does'nt requires sunlight for respiration.
Therefore, a plant respires the whole day but can photosynthesize only during the day time.

hope it helps.. :)
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