A) Saccharum munja and Lantana camara
B) Dichanthium annulatum and Azolla nilotica
C) Crotalaria juncea and Alhagi camelorum
D) Calotropis procera and Phyllanthus niruri
Correct Answer: C
Solution :
Crotalaria juncea (Sunnhemp) and AIhagi camelorum are among the plants which are used as green manures in India. These green manures help the soil through increasement of area and water holding capacity and fertility.
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