Transcript Make your own “Thinking Web”

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
Symbiosis is a close, often long-term
interaction between two species
Mutualism
Commensalism Parasitism
Definition
Both 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
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.
Mutualism
Now that you have the match, classify the
relationship into one of the three
categories:
Commensalism, Mutualism, or Parasitism
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.