Symbiotic Relationships in Nature

Symbiotic Relationships in Nature

Read each question carefully and answer to the best of your ability. Some questions may require you to recall information about different types of symbiotic relationships.

1. Which type of symbiotic relationship benefits both organisms involved?

2. A bird builds its nest in a tree. The bird benefits from shelter, and the tree is neither helped nor harmed. This is an example of:

3. In a parasitic relationship, one organism, the  , benefits while the other organism, the  , is harmed.

4. Lichens are an example of   because they are a close association between a fungus and an alga.

5. All symbiotic relationships are beneficial to both organisms involved.

6. The relationship between a clownfish and a sea anemone is an example of mutualism.

7. Describe the difference between commensalism and parasitism, providing an example for each.

Match each organism pair with the correct symbiotic relationship.

This image shows a Lasius niger ant tending to Cinara tujafilina aphids on a Thuja orientalis plant. This is an example of mutualism, where the ants protect the aphids from predators in exchange for honeydew.