Mineral Nutrition Question 49
49. Which one of the following mineral elements plays an important role in biological nitrogen fixation?
(a) Molybdenum
(b) Copper
(c) Manganese
(d) Zinc
Show Answer
Answer : a
Hints & Solution
(a) Molybdenum is a component of nitrogenase and nitrate reductase involved during $N_2$ fixation. Copper is essential for photosynthesis and respiration. Zinc is involved in synthesis of auxin. Manganese is an activator of enzymes involved in nitrogen metabolism.
