The Specific Relationship Between a Legume and Its Mutualistic Rhizobium

question 19

Multiple Choice

The specific relationship between a legume and its mutualistic Rhizobium strain probably depends on ________.

• A) each legume having a chemical dialogue with a fungus
• B) each Rhizobium strain having a form of nitrogenase that works only in the appropriate legume host
• C) each legume being found where the soil has only the Rhizobium specific to that legume
• D) specific recognition between the chemical signals and signal receptors of the Rhizobium strain and legume species

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