1. Happy Monday, my Ninjas
What you need: Writing Utensil, Journal, handout.
Bellwork Today: Fold your handout in half hamburger style and draw this
GRAB FOLDERS IF YOU PLAN TO GO TO BTP TODAY! THIS IS THE LAST WEEK TO TAKE ADVANTAGE OF THE EXTRA CREDIT FOR THE SIX WEEKS!

2. Today’s Standard:
B12.C: Analyze the flow of energy and matter through trophic levels using various models such as food chains, food webs and ecological pyramids.

3. Set up today’s page… No, NOT Cornell notes!
Title: Food Chains & Webs
Essential Question: How does matter and energy flow through an ecosystem?
No, NOT Cornell notes!
There will be a mini quiz over this material tomorrow at the beginning of class

4. TEST IS THURSDAY THE LAST UNIT TEST OF THE YEAR! *DON’T FAIL IT!
BTP IS today in the CAFETERIA!

5. Who Eats Whom?
Using the pictures at your table, determine the order of which organism eats which organism.
You have a fish, a pelican, a sea slug, phytoplankton, and zooplankton Who eats whom?

6. FOOD CHAIN: a straight-line sequence of organisms that feed on one another to obtain energy

7. Let’s fill in our food chain!
START HERE!
zooplankton
fish
phytoplankton (photosynthetic)
pelican
sea slug
Now we’ll identify the trophic levels.

8. Trophic Level: an organism’s position in a food chain, web, or pyramid
Primary Consumer
Producer
Secondary Consumer
Trophic Level
Tertiary Consumer
Detritivore

9. Producer: an organism that makes its own food Label the producer in your food chain.

10. Consumer: an organism that consumes another organism for its food Label all the consumers in your food chain

11. Primary consumer: first consumer in food chain; eats the producer Label your primary consumer with a #1

12. Secondary consumer: second consumer in food chain; eats the primary consumer Label your secondary consumer with a #2

13. Tertiary Consumer: third consumer in the food chain; eats the secondary consumer Label your tertiary consumer with a #3

14. Detritivore (decomposer): an organism that feeds on dead organisms Label your detritivore with .

15. Herbivore: an organism that obtains energy by only eating producers Circle and label an herbivore in your food chain.

16. Carnivore: an organism that obtains energy by only eating animals Label a carnivore in your food chain.

17. Omnivore: an organism that eats both plants and animals Lable an omnivore in your food chain.

18. Food web: a network of interconnected food chains Food webs show interdependence within an ecosystem.

19. The arrows show how matter and energy flow through the ecosystem.

20. Find at least SIX food chains within this food web.
Each chain must begin with a producer.
Each chain must include at least three trophic levels (producer, primary consumer, secondary consumer)

21. Food chains are an overly simplistic way of describing how energy moves through an environment. Most ecosystems are more accurately described in food webs.

22. Food web: a network of interconnected food chains Food webs show interdependence within an ecosystem.

23. The arrows show how matter and energy flow through the ecosystem.

24. Find at least SIX food chains within this food web.
Each chain must begin with a producer.
Each chain must include at least three trophic levels (producer, primary consumer, secondary consumer)

25. Practice putting organisms in a trophic level!
Zooplankton
Phytoplankton
Mussels
Limpets
Seaweed
Whelk
Crab
Prawn
Fish
Gull
Lobster
Who are the…
Producers?
Primary consumers?
Secondary consumers?
Tertiary consumers?

26. So, how do matter and energy flow
So, how do matter and energy flow? Energy flows in one direction through an ecosystem.

27. This energy originally comes from the sun.

28. Matter is recycled in an ecosystem: 1. Begins with producers 2
Matter is recycled in an ecosystem: 1. Begins with producers 2. Flows to consumers 3. Broken down by decomposers 4. Returned to the earth for producers

29. The body farm...

30. The best way to illustrate energy flow in an ecosystem is with an ecological pyramid. This allows you to more clearly examine each individual trophic level.

31. Ecological pyramid: shows the amount of energy available in each tropic level in an ecosystem

32. Only 10% of the energy available is passed from one trophic level to the next. This is called the 10% Rule. The rest of the energy is lost as heat.

33. Using the 10% Rule, how much energy is available at each level?
Cal = a unit to measure energy
…just like inches is a unit for measuring length!
1000 Cal
? Cal
1 Cal
10 Cal
100 Cal

34. Zooplankton
Phytoplankton
Mussels
Limpets
Seaweed
Whelk
Crab
Prawn
Fish
Gull
Lobster

35. Mini Quiz Take out a sheet of paper and number 1-10
Look at the food chain on each slide and answer the questions.
You do NOT need to write the question.

36. Name the producer.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

37. 2. Name the primary consumer.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

38. 3. Name the omnivore. Human Algae Large Mouth Bass Red Ear Sunfish
Clams

39. 4. Name the secondary consumer.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

40. 5 and 6. Name two carnivores.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

41. 7. Name the tertiary consumer.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

42. 8. Name the herbivore. Human Algae Large Mouth Bass Red Ear Sunfish
Clams

43. 9. What is the original source of all energy?
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

44. 10. The straight-line sequence of organisms that feed on one another to obtain energy is a _______ _______.
Human
Algae
Large Mouth Bass
Red Ear Sunfish
Clams

45. Mini Quiz Answers Algae Clams Human Red Ear Sunfish
Red Ear Sunfish/Large Mouth Bass
Large Mouth Bass/Red Ear Sunfish
Large Mouth Bass
Sun
Food chain