Sagot :
Answer:
1.Fern and branch of a tree
2.Branch of a tree
3.Nothing,The fern is the one who gets benefited from the interaction
4.No
5.The fern is benefited from the interaction,while the tree gets nothing to the interaction the tree didn't get affected or benefited
Explanation:
-Comensalism is an relationship which one organism is benefited and the other is neither benefited or unaffected by the relationship