Digestion-And-Absorption Question 399
Question: Which one of the following mineral elements plays an important role in biological nitrogen fixation? (CBSE 2003; AIEEE 2004; RPMT 2007; DUMET 2009)
Options:
A) Zinc
B) Copper
C) Manganese
D) Molybdenum
Show Answer
Answer:
Correct Answer: D