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Increase in atmospheric concentration beyond which level can become damaging over longer periods?
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Correct option is B
Carbon dioxide is the major limiting factor for photosynthesis. The concentration of CO2 is very low in the atmosphere (between 0.03 and 0.04 per cent). Increase in concentration upto 0.05 per cent can cause an increase in CO2 fixation rates; beyond this the levels can become damaging over longer periods.Similar Questions
Statement A: The optimum CO2 concentration for photosynthesis in C4 plants is lower than C3 plants.
Statement B: The optimum CO2 concentration for Rubisco activity for carboxylation is lower than that to PEP carboxylase activity.
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