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If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that....

Q. If a plant is releasing carbon dioxide and

taking in oxygen during the day, does it

mean that there is no photosynthesis

occurring? Justify your answer ?


Ans. Respiration is the process of oxidation

of food substances that release carbon

dioxide; it takes place throughout the day.

Photosynthesis is the process of fxing the

atmospheric carbon dioxide into organic

compounds (carbohydrates) with release of

oxygen gas as by product. Photosynthesis

takes place during the day in presence of

Sunlight only.

The CO2  released during respiration is

absorbed by plants for photosynthesis

during day causing net release of oxygen

only. If a plant is releasing carbon dioxide

and taking in oxygen during the day, it

means that either rate of photosynthesis is

too slow to counter balance the release of

CO2 by respiration or photosynthesis is not

taking place at all.

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