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Question

C4 plants can fix carbon dioxide efficiently even in

A
Low CO2 concentration
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B
Low temperature
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C
High O2 concentration
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D
Low water concentration
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Solution

The correct option is A Low CO2 concentration
C4 plants use a supplementary method of CO2 uptake, which forms a 4-carbon molecule instead of the two 3-carbon molecules of the Calvin cycle. Hence, these plants are called C4 plants. They can effectively fix carbon in low carbon dioxide concentration as they have kranz anatomy.

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