1. 3/4 Daily Catalyst Pg.27 Symbiosis
Pg. 26 is your food web activity we started yesterday!
1. In a desert biome, the fourth tropic level has .567kcals of energy. How much energy did the food chain start with?
2. Why do food chains typically end with secondary or tertiary consumers?
3. Why do large consumers such as a tertiary consumers exist in smaller numbers in the community?

2. 3/5 Class Business Pg. 27 Symbiosis
Quiz #7 on Friday
Lab on Friday
Lab moved to next TUESDAY (after the PLAN test)
Outside, if weather permits (bring jacket)
Paper due Friday, March 6th
Must be printed out
Must include rubric
3 test grades
3rd, nine-week grades due March 13th

3. 3/5 Agenda Pg.27 Symbiosis Daily Catalyst Class Business
Symbiosis notes
Practice
Ecology paper work time/timed 10
HW: ecology paper and quiz #7

4. Ecology Review What two factors make up an ecosystem?
Abiotic and biotic factors
Give an example of a community.
Elephants, Lions, and tall grass
Owl, spruce trees, and mice
In what biome would buffalo and prairie dogs live? This biome is flat with cold winters and hot summers.
Temperate grassland
True/false: An organisms niche is not specific to that organism
False

5. 3/5 Class Business Pg.27 Symbiosis
Today, we will be able to identify the relationships between organisms.

6. Symbiosis

7. Section 2.1 Summary – pages 35 - 45
Symbiosis
Key Point #1: Symbiosis
A close relationship between two organisms
SYMBIOSIS
SYM: together
Bio: life
SIS: means an action of occurring
There are 3 types of symbiosis we are going to discuss.
Section 2.1 Summary – pages

8. Symbiosis
Draw this in your notebook!

9. Learning Symbiosis through Disney!!

10. Symbiosis
Mutualism

11. Section 2.1 Summary – pages 35 - 45
1. Mutualism
This little fish is helping me by cleaning my teeth!!! Yeah!!!
Both species benefit
I’m eating the big fish’s food so he’s helping me too! Yeah!!!
Let’s start with mutualism
Section 2.1 Summary – pages

12. Mutualism and flowers!
Flowers provide food for insects. Insects spread the seeds of flowers. Both organisms benefit!

13. Symbiosis
Mutualism
Commensalism
Both benefit

14. Second Example

15. Symbiosis
Mutualism
Commensalism
Both benefit

16. Section 2.1 Summary – pages 35 - 45
2. Commensalism
One benefits and the other is neither harmed nor benefited
In this picture, Spanish moss is
growing on the trees. The moss
benefits because it has a place
to live, and the tree doesn’t care.
Section 2.1 Summary – pages

17. More examples of Commensalism
Clownfish hide in poisonous sea anemones which protect them from larger fish. The clownfish benefit, and nothing happens to the sea anemones.

18. Commensalism continued…
This bird, called an egret rides on the back of large mammals like elephants. The egret benefits because it gets a place to live, and the elephant doesn’t care because it does not benefit or become harmed by the relationship.

19. One benefits, one is not harmed or helped
Symbiosis
Parasitism
Mutualism
Commensalism
Both benefit
One benefits, one is not harmed or helped

21. One benefits, one is not harmed or helped
Symbiosis
Parasitism
Mutualism
Commensalism
Both benefit
One benefits, one is not harmed or helped

22. Section 2.1 Summary – pages 35 - 45
3. Parasitism
One benefits and the other is harmed.
WARNING- PICTURES!
Section 2.1 Summary – pages

23. Section 2.1 Summary – pages 35 - 45
Parasitism
Parasites have evolved in such a way that they harm, but usually do not kill the host species.
Tapeworms are parasites.
They attach to your intestines
and suck out all of your food.
the tapeworm benefits, and
the host is harmed because they
slowly starve to death.
One of the ways to get rid of a tapeworm is to starve yourself and then place a piece of meat in front of your mouth. The tapeworm will smell the meat and climb up your throat and out of your mouth.
Section 2.1 Summary – pages

24. Tapeworms continued!!!

25. A lungworm benefits while it harms the host.
Other parasites!
This is the head of a parasite. Parasites often grab on to the digestive tracts (intestines and stomachs) of their hosts.
A lungworm benefits while it harms the host.

26. Guinea Worm-Another parasite!

27. Section 2.1 Summary – pages 35 - 45
Parasitism
A predator is a type of consumer. Predators seek out and eat other organisms (prey).
Predator
Prey
Section 2.1 Summary – pages

28. Symbiosis Parasitism Mutualism Both benefit
Commensalism
Both benefit
One benefits, one is harmed
One benefits, one is not harmed or helped

29. Both benefit in this relationship
Practice Time!
Both benefit in this relationship
mutalism

30. One benefits and the other is harmed
Practice Time
One benefits and the other is harmed

31. One benefits and the other is not harmed or benefitted
Practice Time
One benefits and the other is not harmed or benefitted

32. Take 3 minutes to review population ecology and prepare for quiz #4!

33. Food Web Activity
Directions: Once your have colored and labeled the organisms, follow the hints and begin making the food web. Be careful to connect organisms in the correct manner and watch the arrows!
Answer the post-lab questions in your notebook.
Noise: 1 (with a partner)
Time: 15 minutes

34. Symbiosis W.S.
Directions: Silently and independently, complete the symbiosis worksheet. We will grade this worksheet in class.
Time: 10 minutes
Noise: 0 (silent)