| Column I | Column II | ||
| [a] | Iron bacteria | 1. | Carbonydomonas, Bacillus oligocarbophilus |
| [b] | Hydrogen bacteria | 2. | Beggiatoa, Thiothrix |
| [c] | Sulphur bacteria | 3. | Bacillus pentotrophs |
| [d] | Carbon bacteria | 4. | Leptothrix and Cladothrix |
A) A-4, B-2, C-3, D-1
B) A-3, B-4, C-1, D-2
C) A-4, B-3, C-2, D-1
D) A-2, B-3, C-4, D-1
Correct Answer: C
Solution :
| Iron bacteria | Ferrobacillus, Leptothrix and Cladothrix |
| Hydrogen bacteria | Bacillus pentotrophs |
| Sulphur bacteria Thiobacillus | Beggiatoa, Thiothrix and Thiobacillus |
| Carbon bacteria oligocarbophilus | Carboxyctomonas, Bacillus oligocarbophilus |
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