Bell-ringer

1
Bell-ringer Spiral Review

• What is the name for the powerhouse of a cell?
• How do you know that plants are producers? Why
  arent we producers?
• Explain how the nucleus is related to a teacher
  when relating a cell to a classroom.

2
Symbiosis- a relationship between 2 organisms
where one or both benefit- living together

• Explain how organisms interact through symbiotic,
  commensal, mutual, and parasitic relationships.
• With 80 accuracy
• 0507.2.2

3

• Take out your TCAP Coach.
• Turn to page 41

4
Guided Questions

• In your own words what is symbiosis?
• Are all bacteria decomposers? Explain.
• In a relationship between a horse and horsefly,
  which is being helped? harmed? What type of
  relationship is this?

5
What is symbiosis?
Literal definition the act of living together

• What it means
• Two organisms that live together
• Temporarily or for a longer time
• At least one of the organisms benefits from
  the relationship

6
What are the different kinds of symbiosis?

• Parasitism

Mutualism
Commensalism
both organisms benefit
one organism benefits
one organism benefits
one organism is unaffected
one organism is harmed
7
1 2 3 Flash

• Take out your cards- marked
• commensalism
• Mutualism
• Parasitism
• Match the card with the relationship on the
  screen when I say 123 Flash.

8
Example 1 Acacia plant with ant galls
Ants lay eggs on acacia treeAcacia covers the
infected area with brown flesh (gall)
Parasitism one benefits, one is harmed
9
Mutualism both benefit
Example 2 Moray Eel with Cleaner Fish
Moray Eel gets a clean mouth Cleaner Fish gets a
meal
10
Example 3 Cattle with cattle egrets
Cattle stir up insects as they eat grassEgrets
hang around and eat insects
Commensalism one benefits, one is unaffected
11
Example 4 Clown fish with anemone
Clown fish gets protection Anemone is unaffected
Commensalism one benefits, one is unaffected
12
Mutualism both benefit
Example 5 Antelope with Oxbird
Antelope gets rid of parasites Oxbird gets a meal
13
Example 6 Taenia worm in human eye
Worm infects human blood streamHuman may go blind
Parasitism one benefits, one is harmed
14
Partner Activity

• Match the relationship with the organism.

15
Individual practice
16
Quick End

• Define symbiosis. (knowledge)
• Shrimp live in a sea anemones arms, the shrimp
  are not harmed by the poison. Which relationship
  is this an example of?
• Think of a relationship that you or someone you
  know has with a pet. Is the relationship an
  example of mutualism, commensalism, or
  parasitism? How? Explain. (analytical)

17
This powerpoint was kindly donated to
www.worldofteaching.com http//www.worldofteac
hing.com is home to over a thousand powerpoints
submitted by teachers. This is a completely free
site and requires no registration. Please visit
and I hope it will help in your teaching.
18
(No Transcript)