3-2 ENERGY FLOW IaN pg. 51
MAIN IDEAS
1. Autotroph
2. Producer
3. Photosynthesis
4. Chemosynthesis
5. Heterotroph
6. Consumer
7. Herbivore
8. Carnivore
9. Omnivore
10. Detritivore
11. Decomposer
Objective
12. Food Chain
13. Food Web
14. Trophic Level
15. Ecological Pyramid
16. Biomass
Identify, trace &
evaluate the
source, flow and
efficiency of energy
through
interdependent
organisms using
food chains &
webs.
Where do you get your energy?
https://www.youtube.com/watch?v=v6ubvEJ3KGM
I. Producers & Consumers
A. Autotrophs
1. Producers that make their own food
2. PhotosynthesisHow?
or Chemosynthesis
B. Heterotrophs
1. Consumers
that
obtain
food from
organisms
Who are
they
dependent
upon other
for energy?
II. Heterotrophs / Consumers
A.
B.
C.
D.
E.
Herbivores - ? (Define & Give an Example)
Omnivores - ? (Define & Give an Example)
Carnivores - ? (Define & Give an Example)
Detritivores - ? (Define & Give an Example)
Decomposers - ? (Define & Give an Example)
Heterotrophic Classification
Heterotroph Example
Decomposer
Herbivore
Detritivore
Omnivore
Carnivore
A, B, C, D, E
A, B, C, D, E
A, B, C, D, E
A, B, C, D, E
A, B, C, D, E
A
B
D
E
A
B
D
E
C
?
C
?
A
B
D
E
C
?
III. Food Chain
A. Models linear feeding relationship
1. Energy flows through ecosystem in
one direction
B. Trophic levels
1. Each step in the food chain (This can
vary depending upon community)
a.
b.
c.
d.
e.
Primary Producers
Primary Consumers
Secondary Consumers
Tertiary Consumers
Quaternary Consumers
IV. Food Web
A. Shows more
complex/realistic
feeding
relationships in
an ecosystem.
B. Trophic Levels
still exist
Tertiary
Consumers
Secondary
Consumers
Primary
Consumers
Primary
Producers
V. Ecological Pyramids
A. Model of energy & matter (3 Types)
KEY CONCEPT? Page 72
1. Energy Pyramids
How is Biomass expressed?
2. Biomass Pyramids
3. Pyramid of Numbers
Ecological Pyramids
IAN p 50
• Divide your notebook page into 3 triangular shapes.
• Label & Create the 3 types of Ecological Pyramids using
your own examples.
YOUR PYRAMIDS MUST INCLUDE:
• At least 4 trophic levels w/ labels
• Specific labels for each pyramid
• Colorful illustrations
REFERENCE Pages 72-73 in your textbook.
Biomass Pyramid