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Question :S- In free living state, Azospirillum do N_2fixing, from the atmosphere.R- In symbiotic state, Rhizobium do atmospheric N_2fixing.

Answer»

STATEMENT S&R both are TRUE But R is EXPLANATION of S.
Statement S&R both are true And R is not explanation of S.
.S. is true, .R. is false.
.S. is false, .R. is true.

Solution :Statement S&R both are true And R is not explanation of S.


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