Denitrification occurs in

(1) Leaves

(2) Roots

(3) Soil

(4) Environment

(1) Ammonia

(2) Nitrate

(3) Nitrite

(4) Nitrogen

(1) In leaves

(2) In roots

(3) In soil

(4) In air

(1) Reduction of nitrate to nitrite

(2) Reduction of nitrate to nitrogen

(3) Reduction of nitrous to nitrite

(4) Reduction of nitrogen to ammonia

(1) Pesudomonas

(2) Thiobacillus

(3) Nitrobacter

(4) Both A and B

(1) Electrical Nitrogen Fixation

(2) Biological Nitrogen Fixation

(3) Industrial Nitrogen Fixation

(4) Both B and C

(1) Nitrogenase

(2) Pyruvate kinase

(3) Glucokinase

(4) Enolase

(1) Nitrate to Nitrite

(2) Nitrogen to Ammonia

(3) Nitrogen to Nitrite

(4) Nitrogen to Nitrate

1. Glomus

2. Azotobacter

3. Frankia

4. Azolla

(1) Anabaena

(2) Azotobacter

(3) Beijernickia

(4) Rhodospirillum