Why do plants produce more carbon dioxide than oxygen during the night?
a. photosynthesis only produces carbon dioxide during the night.
o
b. respiration produces oxygen during the day and carbon dioxide at
night
o
c. respiration can only occur when there is no available sunlight.
o
d. respiration can happen without sunlight, but photosynthesis
cannot
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D. Respiration can happen without sunlight, but photosynthesis

cannot

Explanation: Photosynthesis and cellular respiration are two opposite reactions that occur in plants. During the day in the presence of sunlight, plants use carbon dioxide and water to produce glucose and oxygen. During the day more oxygen is produced by plants due to photosynthesis. In the day, plants break down the glucose in the presence of oxygen to produce carbon dioxide and water with a release of energy in the process of cellular respiration. In the night more carbon is produced from cellular respiration because photosynthesis is shut down in plants due to absence of sunlight.

Chemical equation for photosynthesis is 6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2.

Chemical equation for cellular respiration is C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy.

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