| Example | Relationship Type |
|---|---|
| 1. Forest, undergrowth and toadstool | B. Commensalism (The toadstool benefits from the tree, while the tree is neither harmed nor helped). |
| 2. Wolf and rabbit | E. Predation (The wolf preys on the rabbit). |
| 3. Parasite and host | C. Parasitism (The parasite lives on or in the host, harming it). |
| 4. Competition between young pines and birches in dense growth | D. Competition (Both species compete for resources like light, water, and nutrients). |
Note: Mutualism (A) involves a relationship where both organisms benefit. This is not represented in the provided examples.
Answer: 1-B, 2-E, 3-C, 4-D