A. Zinc
A.
B. Molybdenum
B.
C. Calcium
C.
D. Sulfur
D.
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
Molybdenum is a crucial micronutrient for legumes in nitrogen fixation. It's a component of the enzyme nitrogenase, which is responsible for converting atmospheric nitrogen into ammonia, a usable form for plants.