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← Nature & AnimalsWhich outcome results when C4 plants experience sustained water stress?
A)Increased oxidative phosphorylation
B)Decreased photorespiration efficiency
C)Reduced malate shuttle activity✓
D)Enhanced nitrogen fixation rates
💡 Explanation
Reduced malate shuttle activity occurs because of reduced CO2 availability, this slows the C4 pathway and carbon concentration to the Calvin cycle; therefore, malate shuttling diminishes, rather than an increase in efficiency or affecting the unrelated nitrogen fixation process.
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