Question

Frankia produces nodules on the roots of

• A. leguminous plants like Alnus
• B. non-leguminous plants like Alnus
• C. leguminous plants like sweet pea
• D. non-leguminous plants like sweet pea

Answer 1

The correct option is B non-leguminous plants like Alnus

Frankia is a nitrogen fixing microbe and it establishes a symbiotic relationship with the roots of trees belonging to the genus Alnus. It produces nitrogen fixing nodules on the roots of theses plants. Alnus sp. are non-leguminous plants. Leguminous plants often have a symbiotic relationship with nitrogen fixing bacteria like Rhizobium. Alfalfa, sweet clover, sweet pea, lentils, garden pea, broad bean, clover beans are leguminous plants.