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C4 plants reach CO2 saturation at about which level?
A200 µlL-1
B450 µlL-1
C600 µlL-1
D360 µlL-1
Answer & Solution
Correct answer: D. 360 µlL-1
C4 plants saturate near 360 microlitres per litre, whereas C3 plants keep responding beyond 450.
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