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Two green plants are kept separately in ...

Two green plants are kept separately in oxygen free containers, one the dark and the other in continuous light. Which one will live longer? Give reasons.

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Respiration and photosynthesis are the two vital processes for plant life. The plant kept in light would be able to produce oxygen, required for respiration, by the process of photosynthesis and would live longer. The one kept in dark would die as soon as the container becomes filled with carbon dioxide gas produced by respiration.
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