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What Ecological Role Were the Nitrogen-Fixing Bradyrhizobium Japonicum Bacteria in Soybean

Question 10

Multiple Choice

What ecological role were the nitrogen-fixing Bradyrhizobium japonicum bacteria in soybean root nodules effectively playing when the experimenters cut off gaseous nitrogen?


A) Free rider
B) Commensal
C) Predator
D) Symbiont

Correct Answer:

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