Question

Match the column.

List I	List II
A. Nitrosomonas	I. Dentrifying bacteria
B. Nitrobacter	II. Soil bacteria
C. Psuedomonas	III. Nitrate bacteria
D. Azotobacter	IV. Nitrite bacteria

• A. A- IV, B- III, C- I, D- II
• B. A- I, B- II, C- IV, D- III
  
• C. A- IV, B- III, C- II, D- I
  
• D. A- II, B- III, C- I, D- IV
  

Answer 1

The correct option is A A- IV, B- III, C- I, D- II

• Nitrosomonas is a rod-shaped bacteria that oxidize ammonia to nitrite as a metabolic process and also during the nitrogen cycle thereby increasing the availability of nitrogen to plants.
• Nitrobacter is a rod-shaped bacteria that play an important role in the nitrogen cycle by oxidizing nitrite into nitrate in the soil.
• Pseudomonas denitrificans is a denitrifying bacteria in the nitrogen cycle by releasing nitrogen back into the atmosphere to be fixed for plants by the microbes.
• Azotobacter is aerobic, free-living soil microbes that play an important role in the nitrogen cycle in nature by binding atmospheric nitrogen.

So, the correct answer is option A.