Question

Different microorganisms taking part in nitrogen cycle are: 

(i) Rhizobium in roots 

(ii) Ammonifying bacteria 

(iii) Nitrifying bacteria 

(iv) Denitrifying bacteria Which of them strictly work under anaerobic conditions? 

1. only iv 

2. i & iv 

3. i, ii & iv 

4. ii & iv

Answer 1

1. only iv

Only “denitrifying bacteria” work strictly under anaerobic conditions.