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← Nature & AnimalsWhich metabolic limitation emerges in legumes when molybdenum bioavailability decreases in nitrogenous soil?
A)Reduced chlorophyll synthesis
B)Cellulose digestion failure
C)Impaired nitrogen fixation✓
D)Increased starch accumulation
💡 Explanation
Impaired nitrogen fixation occurs because molybdenum acts as a crucial cofactor for the enzyme nitrogenase. Nitrogenase catalyzes atmospheric nitrogen, therefore molybdenum deficiency prevents this mechanism and proper nitrogen assimilation; rather than alternatives like starch impacts, which do not directly rely on molybdenum’s function.
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