2. Food Web
A food web consists of many food chains.
A food web shows many different paths that connect plants and animals. A
food web is many food chains connected.
A food chain only follows one path of an animal finding food.
There are two types of food chains:
Aquatic and terrestrial
Aquatic = water
Terrestrial = land
3. What is in a Food Chain?
Producers
Consumers
Decomposers
4. Producers and Where are they located
on the food chain?
Producers make their own food from abiotic compounds.
Green plants use energy from the sun to make their own food.
They are located on the bottom of the food chain.
It takes a lot of producers at the bottom of the pyramid to support the
organisms above them.
Example: Green plants and algae
5. Consumers
Consumers are organisms that feed
on other organisms or organic
matter because they cannot
produce their own food.
Depend upon food provided
directly or indirectly by producers.
There are 3 levels of consumers
Primary Consumers
Secondary Consumers
Tertiary Consumers
6. Trophic Level
Organisms place in a food chain
Trophic relationships are expressed as a pyramid
First Trophic Level=Primary Producer
Second Trophic Level=Primary Consumer
Third Trophic Level=Secondary Consumer
Fourth Trophic Level=Tertiary Consumer
9. Secondary Consumers
Carnivores-Meat Eaters
Animals that eat herbivores
There are few top carnivores (e.g.
eagles, hawks, tigers, sharks).
Top carnivores are the first to
suffer when the ecosystem is
disrupted.
These species are vulnerable to
extinction.
Example: Snake that eats rabbits
10. Tertiary Consumers
An organism that feeds on
secondary consumers.
Example: A hawk that eats owls
11. Human Interference
Habitat disruption or degradation disrupts primary productivity.
Humans are at the top of the pyramid and become vulnerable whenever lower
trophic levels decrease.
The ability to grow green plants limits the number of consumers.
13. QUIZ
What is a Food Web?
What is in a Food Chain?
What is an example of a producer?
How many levels of consumers are there?
What is a trophic level?
14. References
"FOOD CHAIN SONG by Heath." YouTube. YouTube, n.d. Web. 24 Mar. 2015.
<https://www.youtube.com/watch?v=ttpNGJcpJ68>.
"Gallery For Blank Trophic Level Pyramid." Gallery For Blank Trophic Level
Pyramid. N.p., n.d. Web. 24 Mar. 2015. <http://imgarcade.com/1/blank-
trophic-level-pyramid/>.
15. Honor Code
On my honor as a University of South Carolina Aiken student, I have
completed my work according to the principle of Academic Integrity. I have
neither given nor received any unauthorized aid on this
assignment/examination
Madison Strama
Averie Daniels