Importance of Soil
Trending Questions
Q. What kind of soil is considered as organic soil?
- Soils whose organic composition is 80% and above.
- Soil which contains more fertilizers of Sodium, potassium and Calcium.
- Soil which contains 30% or more organic matter.
- Soils whose organic composition is less than 70%.
Q. ![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/6998/content_nitrogen_cycle.png)
Identify the different processes A, B, C and D in the given image of nitrogen cycle.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/6998/content_nitrogen_cycle.png)
Identify the different processes A, B, C and D in the given image of nitrogen cycle.
- A-Ammonification
B-Nitrogen fixation
C-Denitrification
D-Nitrification - A-Nitrification
B-Ammonification
C-Denitrification
D-Nitrogen fixation - A-Nitrogen fixation
B-Ammonification
C-Nitrification
D-Denitrification - A-Denitrification
B-Nitrification
C-Ammonification
D-Nitrogen fixation
Q. Match the columns and choose the correct answer.
I | II | ||
p | Thiobacillus denitrificans | i | Nitrogen fixation |
q | Nitrosomonas | ii | Ammonification |
r | Azotobacter | iii | Nitrification |
s | Bacillus vulgaris | iv | Denitrification |
- p - iv, q - iii, r - i, s - ii
- p - iii, q - iv, r - i, s - ii
- p - iv, q - ii, r- i, s - iii
- p - ii, q - i, r - iii, s - iv
Q. Dead decomposed organic matter is usually added in the field before the cultivation of crops. Apart from providing the mineral nutrients, what additional role does organic matter play in the cultivation of crops?