1. Symbiotic Relationships
SPI Distinguish among symbiotic, commensal, and parasitic relationships.
Classify interspecific relationships in an ecosystem as mutualism, commensalism, or parasitism.

2. Vocabulary Review commensalism mutualism parasitism
Drag the words to the correct box.
Vocabulary Review
commensalism
mutualism
parasitism
A relationship where both organisms benefit.
A relationship where one organism benefits and the other is unaffected.
A relationship where one organism benefits and the other is harmed.

3. Video Review
Explain symbiotic relationships in 3-5 sentences. (Note: Double-click to play the video)
Symbiosis Paragraph: (5 sentence minimum)
(Type here.)
Use complete sentence.

4. Media Break
List an example of each type of relationship from the song. (Note: Double-click to play the video)
Examples:
Parasitism:
Mutualism:
Commensalism:

5. Investigating Relationships

6. Investigating Relationships
Read the text and answer the questions.
A certain type of mite is a parasite of honeybees. What type of relationship is this? Write a sentence describing the relationship between the mites and the bees.
Answer:
A flea is a parasite that gets its energy from the blood of animals like dogs. How are the flea and dog affected in the relationship?
As a hippopotamus feeds on grass, a small bird feeds on parasites, such as ticks, living on the hippopotamus. Which types of relationships exist in this situation?

7. Investigating Relationships
Classify the type of symbiotic relationship. Type commensalism, mutualism, or parasitism in the box.
A certain species of shrimp can travel from one place to another by riding on a sea cucumber. The sea cucumber is not harmed by the presence of the shrimp.
Hummingbirds feed on the nectar of flowers. While they are eating, pollen from the flower attaches to them and gets spread to another location.
There is Mistletoe growing on a mangrove tree. The Mistletoe penetrates the bark of the mangrove and then takes some of its food from the mangrove.
Lichens consist of a fungus and an algae growing together. The fungus gets food from the photosynthesizing algae, and the algae gets a place to live.

8. Investigating Relationships
Bacteria living in a cow’s stomach helps break down the plant material.
Jane thinks this describes a parasitic relationship but Jack says it is an example of mutualism.
Who is correct? Explain.
Answer:

9. Your Turn

10. Explore and Research Click “Insert” from the top menu.
Click “Online Pictures”.
Use the search box to search the web for images about commensalism, mutualism, and parasitism.
Use your research to complete the next few slides.

11. Commensalism
Pictures (Click images on the Explore box and drag them onto the slide. Make sure you resize it to fit.)
Definition: Commensalism is
Examples (at least 2 new and different from the image):

12. Mutualism
Pictures (Click images on the Explore box and drag them onto the slide. Make sure you resize it to fit.)
Definition: Mutualism is
Examples (at least 2 new and different from the image):

13. Parasitism
Pictures (Click images on the Explore box and drag them onto the slide. Make sure you resize it to fit.)
Definition: Parasitism is
Examples (at least 2 new and different from the image):