Make your own “Thinking Web” We have looked at food chains and food webs that show the transfer of energy between organisms as well as the predator-prey relationships between species. Using your schema, brainstorm other ideas on how species interact in communities and ecosystems. Branch off the main bubble in your Brain Books “How do species interact?”

Insights into Symbiotic Relationships

In the movie Spiderman 3, Spiderman comes in contact with an organism that causes his suit to turn black and affects his thinking. Hold your thinking in your Brain Books: How does this relate to the special interactions between 2 species that we discussed yesterday?

Organize your thinking MutualismCommensalismParasitism DefinitionBoth species benefit One species benefits and one is unaffected One species benefits and one is harmed Examples Clownfish and the anemone Cleaner fish cleaning the teeth of the larger fish Spiders and their webs in trees Hookworms or ticks and their hosts Symbiosis is a close, often long-term interaction between two species

Parasitism: -Wasp that lays eggs on the worm for them to feed on worm as they grow - Hornworm (host) that cannot remove eggs Commensalism: -Barnacles attach to whales and wait for food to go by -Whales are unaffected Mutualism: Chimps benefit as -one is cleaned -another feeds

Match the symbiotic relationship to the set of images that best describes the interaction between the two organisms.

Check your thinking! In what ways do the pictures represent the relationships?

Task Work with your partner. Use your knowledge of symbiosis to: – Pair organisms together based on the descriptions of their needs – Categorize the pairs by type of symbiotic relationship You will have three category titles to begin to classify your organism relationships. What are they? Let’s look at some examples.

Now that you have the match, classify the relationship into one of the three categories: Commensalism, Mutualism, or Parasitism Mutualism

Think about your “Thinking” How are you classifying/pairing the organisms? What type of evidence are you looking for as you read about the diverse creatures?

What are you doing about the organisms you are not sure where they belong? How do you know the relationships are correct? Do you see any patterns emerging from the organisms in each category? If so, what are they?

Reflection 1. Are the relationships in the organism pairs what you expected? (Were there surprise matches?) 2. How has your thinking changed? 3. Which cooperative learning skills and discourse norms were helpful today?

How is this a non-example of symbiosis?

Think back to the example of Spiderman and the symbiote that bonds with him and then later his enemy. The bond creates very different creatures between the good "darker" Spiderman and the evil Venom. Answer in your Brain Books: What type of symbiotic relationship is created when it binds with humans? JUSTIFY your answer in your brain books.