1. Symbiosis Living Together

2. Agenda 4/9/2015 Warm-Up Symbiotic Relationships Notes
Living Together- video

3. Warm-Up List three reasons an organism might rely on another organism.
Give three examples of symbiotic relationships.

4. Section 2.1 Summary – pages 35 - 45
SYMBIOSIS
A relationship between organisms of different species is called symbiosis.
Four kinds of symbiosis are recognized:
1. mutualism,
2. commensalism,
3. parasitism,
4. predator/prey.
Section 2.1 Summary – pages

5. Section 2.1 Summary – pages 35 - 45
SYMBIOSIS
Mutualism
A symbiotic relationship in which both species benefit is called mutualism.
Section 2.1 Summary – pages

6. Acacia Tree and Ants

7. Human Bacterial Flora

8. Bees and Flowers

9. Section 2.1 Summary – pages 35 - 45
SYMBIOSIS
Commensalism
Commensalism is a symbiotic relationship in which one species benefits and the other species is unaffected.
Section 2.1 Summary – pages

10. Clown Fish and Sea Anemone

11. Monarch Butterfly and Milkweed

12. Section 2.1 Summary – pages 35 - 45
SYMBIOSIS
Parasitism
A symbiotic relationship one species benefits and the other is harmed is called parasitism.
Section 2.1 Summary – pages

13. Section 2.1 Summary – pages 35 - 45
SYMBIOSIS
Parasitism
Parasites have evolved in such a way that they harm, but usually do not kill the host species.
Tape Worms in Intestine
Section 2.1 Summary – pages

14. Tongue Eating Louse

15. Parasitic Wasp

16. Mosquitos

17. Symbiosis Predator and Prey
In a predator and prey relationship one species is benefitted and the other is killed.

18. Symbiosis Competition
A symbiotic relationship in which organisms fight/compete for food, shelter, a mate or other resources.

19. Symbiosis Predator and Prey
Predators seek out and eat other organisms.
Predation is found in all ecosystems and includes organisms that eat plants and animals.

20. Section 2.1 Summary – pages 35 - 45
ORGANISMS IN ECOSYSTEMS
A habitat is the place WHERE an organism lives out its life.
Section 2.1 Summary – pages

21. Section 2.1 Summary – pages 35 - 45
ORGANISMS IN ECOSYSTEMS
A niche is the WAY an organism lives out it’s life
how it meets its specific needs for food and shelter
how it survives,
and where it reproduces in its environment.
Section 2.1 Summary – pages

22. Section 2.1 Summary – pages 35 - 45
ORGANISMS IN ECOSYSTEMS
Why is it thought that two species can’t exist for long in the same community if their niches are the same?
Section 2.1 Summary – pages

23. Living Together