Soybeans Will Have Several Hundred Rhizobium Nodules Per Plant and May

question 3

Multiple Choice

Soybeans will have several hundred Rhizobium nodules per plant and may divert 20-30 percent of their energy,generated by photosynthesis,to the nodule instead of to other plant functions when the nodule is actively fixing nitrogen.Which of the following best describes Rhizobium?

• A)a soil fungus that grows within the root
• B)a parasitic plant that grows within the root
• C)a soil bacterium that grows within the root
• D)a virus that grows within the root
• E)a mycelium that grows within the root

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