Soybeans Will Have Several Hundred Rhizobium Nodules Per Plant and May

question 36

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.Why would the plant divert so much energy to Rhizobium?

• A)because Rhizobium produces ammonium (NH₄⁺)
• B)because Rhizobium produces nitrogen (N₂)
• C)because Rhizobium produces sugars
• D)because Rhizobium protects the plants from predators
• E)because Rhizobium protects the plants from parasites

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