A. absorbing inorganic ions from the soil
B. protecting it from infection
C. helping it to utilize atmospheric nitrogen
D. serving as a growth regulator
Correct Answer:
Option D – serving as a growth regulator
A. absorbing inorganic ions from the soil
B. protecting it from infection
C. helping it to utilize atmospheric nitrogen
D. serving as a growth regulator
Correct Answer:
Option D – serving as a growth regulator
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