question_answer

Match the items given in column-I with their examples given in column-II and choose the correct answer.

	Column-I		Column-II
A.	Free living aerobic nitrogen	I.	Anabaena and Nostoc
B.	Anaerobic nitrogen fixers	II.	Pseudomonas and Thiobacillus
C.	Nitrogen fixing cyanobacteria	III.	Nitrosomonas and Nitrococcus
D.	Denitrifying bacteria	IV.	Azotobacter and Beijernickia
E.	Nitrifying bacteria	V.	Rhodospirillum

A) A-IV;   B-V;    C-I;    D -II;   E-III

B)        A-V;    B-IV;   C-I;    D-III;   E-II

C)        A-IV;    B-V;    C-II;   D-III;   E-I

D)        A-IV;    B-III;   C-I;    D-II;    E-V