Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing microorganism? (a) Crotalaria juncea (b) Cycas revoluta (c) Cicer arietinum (d) Casuarina equisetifolia
Option D Casuarinaceae is the family of dicotyledonous flowering plants placed in the order Fagales. Casuarina is a member of the family, characterized by drooping equisteoid twigs, are evergreen, and monoecious or dioecious. The roots have nitrogen fixing nodules that contain the soil actinomycetes called Frankia which is filamentous bacteria.
