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Question

For the same amount of CO2 fixed, a C4 plant in comparison with a C3 plant loses only

A
Half amount of water
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B
Equal amount of water
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C
Double amount of water
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D
None of the above
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Solution

The correct option is B Half amount of water
For C3 plants, photorespiration is a significant problem during which these plants close their stomata to conserve water. The CO2 grabbed is directly transferred to RUBISCO and not allowing the oxygen to photo-respiration. Thus only half amount of water is lost.


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