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← Nature & AnimalsWhich outcome follows when nitrogenase action declines in plants?
A)Ammonia production decreases systemically✓
B)Photosynthetic rate increases rapidly
C)Xylem nutrient uptake accelerates
D)Stomata close preventing water diffusion
💡 Explanation
Reduced nitrogenase activity prevents nitrogen fixation, because this enzyme complex catalyzes the conversion of atmospheric nitrogen to ammonia, therefore ammonia available for amino acid synthesis decreases, rather than increased photosynthesis via heightened xylem transport, or induced stomatal closure.
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