1. Ecological Relationships
Standard II:
Objective 2: Generalize the dependent relationships between organisms.
a. Categorize the relationships between organisms (i.e., producer/consumer/decomposer, predator/prey, mutualism/parasitism) and provide examples of each.

2. Symbiosis: Organisms living together

3. Is this Symbiosis?
The pilot fish follow sharks for leftovers.
YES!

4. Is this Symbiosis?
Mosquito sucking blood
YES!

5. Is this Symbiosis?
Bees pollinating a flower.
YES!

6. NO! Is this Symbiosis? The lynx tries to catch a rabbit dinner.
Symbiosis is organisms living together. You can’t do that if one is dead!
NO!

7. Mutualism A symbiotic relationship where both species BENEFIT
Ants and Aphids: Ants protect the aphids and milk them for honeydew

8. Mutualism
Clownfish clean the Anemone. In return, they are protected.

9. Commensalism
A symbiotic relationship between organisms in which one is neither harmed nor benefitted.
This pseudoscorpion hitches a ride on this fly.

10. Parasitism
A symbiotic relationship in which one organism benefits and the other is HARMED.

11. Parasitism
Human tape-worm is a quick way to lose weight- They grow over 20 feet long. Maybe there’s something more important than weight to worry about, eh?

12. What type of Symbiosis is this? (Mutualism, Commensalism, Parasitism)
Birds eat bugs rustled up by the cows as the cows walk through the grass.
Commensalism

13. What type of Symbiosis is this? (Mutualism, Commensalism, Parasitism)
Leeches suck blood from other animals.
Parasitism

14. What type of Symbiosis is this? (Mutualism, Commensalism, Parasitism)
Leopard seal eating a penguin
Not Symbiosis!! This is a predator/prey relationship

15. What type of Symbiosis is this? (Mutualism, Commensalism, Parasitism)
Turtles get cleaned by the fish. The fish get a meal.
Mutualism

16. Review- tell your desk partner what the following terms mean:
Symbiosis
Mutualism
Commensalism
Parasitism