| Column I (Bacteria) | Column II (Function) |
| a. Nitrobacteria | 1. Fixation of atmospheric nitrogen |
| b. Ammonifying bacteria | 2. Formation of NH+4 |
| c. Denitrifying bacteria | 3. Formation of NO-3 |
| d. Rhizobium | 4. Formation of N2 |
A. a-3, b-4, c-1, d-2
B. a-1, b-2, c-4, d-3
C. a-3, b-2, c-4, d-1
D. a-4, b-1, c-2, d-3
Answer: Option C
This Question Belongs to Biology GK Chapter Wise >> Economic Biology
The anti-malarial drug quinine is made from a plant. The plant is
A. Neem
B. Eucalyptus
C. Cinnamon
D. Cinchona
The causal organism of black stem rust of wheat is
A. Xanthomonas compestris
B. Pseudomonas solanacearum
C. Puccinia graminis tritici
D. Albugo candida
A. a-2, b-1, c-4, d-3
B. a-1, b-4, c-3, d-2
C. a-4, b-3, c-2, d-1
D. a-3, b-2, c-1, d-4
Which one of the following plants is used for green manuring in India?
A. Wheat
B. Sunhemp
C. Cotton
D. Rice
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