| Which of the following adds/add nitrogen to the soil? |
| 1. Excretion of urea by animals |
| 2. Burning of coal by man |
| 3. Death of vegetation |
| Select the correct answer using the codes given below. |
A) Only 1
B) 2 and 3
C) 1 and 3
D) All of these
Correct Answer: C
Solution :
Exp. [c] Waste products of animals as well as dead remains of organisms are converted in inorganic ammonia by bacteria in a process ammonification. This ammonia is then converted into nitrate nitrites by Nitrosomonas and Nitrococcus bacteria respective. Another soil bacteria Nitrobacter can convert nitrate into nitrite
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