Match the pair of organisms in Group 1 with their characteristic interactions in Group 2
| Group 1 | Group 2 |
| P. Photoblepharon palpebratus and Vibriofischeri | 1. Mutualism |
| Q. Pseudomonas and Bdellovibrio | 2. Symbiosis |
| R. Aspergillus and Pseudomonas | 3. Antagonism |
| S. Thiobacillusferrooxidans and Beijerinckia lacticogenes | 4. Parasitism |
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