1. Science Starter: Wednesday April 5, 2017 Day 1
1. Please have these
Items on your desk.
Science
Notebook
Agenda
Science Starters
Sheet
Science Starter:
What does it mean to have a relationship?
What do you remember about symbiosis from
the game we played?

2. Table of Contents Update
4/05 (Green) Warm Ups 4/3 – 4/7/17 Page 50 4/05 (Green) Warm Ups 4/10 – 4/14/17 Page 51 4/05 (Purple) Symbiosis Notes Page 52 4/05 (Pink) Ecology Learning Goal Page 53

3. Literal definition: the act of living together
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

4. What are the different kinds of symbiosis?
Mutualism
Commensalism
Parasitism
one organism benefits
both organisms benefit
one organism benefits
one organism is unaffected
one organism is harmed

5. Parasitism: one benefits, one is harmed
Example 1: Acacia plant with ant galls
Ants lay eggs on acacia tree Acacia covers the infected area with brown flesh (gall)
Parasitism: one benefits, one is harmed

6. Mutualism: both benefit
Example 2: Moray Eel with Cleaner Fish
Moray Eel gets a clean mouth Cleaner Fish gets a meal
Mutualism: both benefit

7. Commensalism: one benefits, one is unaffected
Example 3: Cattle with cattle egrets
Cattle stir up insects as they eat grass Egrets hang around and eat insects
Commensalism: one benefits, one is unaffected

8. Mutualism: Both benefit
Example 4: Clown fish with anemone
Clown fish gets protection Anemone
gets food
Mutualism: Both benefit

9. Mutualism: both benefit
Example 5: Antelope with Oxbird
Antelope gets rid of parasites Oxbird gets a meal
Mutualism: both benefit

10. Parasitism: one benefits, one is harmed
Example 6: Taenia worm in human eye
Worm infects human blood stream Human may go blind
Parasitism: one benefits, one is harmed