Which of the Following Is NOT Correct Regarding Rhizobia

question 55

Multiple Choice

Which of the following is NOT correct regarding rhizobia?

• A) Rhizobium, Bradyrhizobium, and Synorhizobium are among the genera comprising rhizobia.
• B) They may live freely in soil, but they prefer to establish symbioses with specific legumes.
• C) They form nodules in the roots to favor anaerobiosis and consequently nitrogen fixation.
• D) They provide the host with leghemoglobins, which help the plant hosts combat pathogens.
• E) Each species colonizes a particular host range for infection.

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