Symbiosis in Biology

Symbiosis: Interdependent Relationships

Read each question carefully and provide your best answer. Refer to your knowledge of symbiotic relationships.

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

2. A tapeworm living in the intestine of a mammal is an example of which symbiotic relationship?

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

4. The organism that lives on or in another organism and benefits by deriving nutrients at the host's expense is called a  .

5. Lichens are a classic example of a mutualistic relationship between a fungus and an alga.

6. In a parasitic relationship, both organisms are harmed.

7. Provide an example of a mutualistic relationship not mentioned in this worksheet and explain how both organisms benefit.

8. Describe the key difference between commensalism and parasitism.

Examine the image below which illustrates various symbiotic relationships. Identify and label each example as Mutualism, Commensalism, or Parasitism.

A.  

B.  

C.