Which of the type of fixation leads to fixation of atmospheric nitrogen to ammonia?

(1) Biological nitrogen fixation

(2) Industrial nitrogen fixation

(3) Electrical nitrogen fixation

(4) Both A and B

(1) Nitrosomonas

(2) Nitrococcus

(3) Nitrobacter

(4) All of these

(1) Nitrococcus

(2) Nitrosomonas

(3) Nitrobacter

(4) Thiobacillus

(1) Photoautotroph

(2) Chemoautotroph

(3) Nitrotroph

(4) Organotroph

(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