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← Nature & AnimalsWhich consequence results when prolonged anoxia constrains the rhizosphere of legume plants?
A)Inhibited nitrogen fixation, causing chlorosis✓
B)Enhanced nutrient uptake, accelerating growth
C)Increased nodule glycolysis maintaining sugars
D)Elevated symbiosome ATP preventing senescence
💡 Explanation
Impaired oxygen supply inhibits nitrogen fixation by nitrogenase within root nodules because nitrogenase requires anoxic conditions, therefore reduced nitrogen availability causes chlorosis, leaf yellowing, rather than enhanced nutrient uptake under hypoxic stress.
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