Consider the following types of biotic interaction:
| Type | Definition |
| 1. Mutualism | Both the species benefit. |
| 2. Amensalism | One species benefits, the other is unaffected. |
| 3. Parasitism | One species benefits, the other is harmed. |
Which of the pairs given above is/are correctly matched?
1
1 only
2
1 and 3 only
3
2 and 3 only
4
3 only