Question
Biology Question on Nutrition
Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism?
A
Crotalaria juncea
B
Cycas revoluta
C
Cicer arietinum
D
Casuarina equisetifolia.
Answer
Casuarina equisetifolia.
Explanation
Solution
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.