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Food Chains
• Food Chain • A series of events in
which one organism
eats another and
obtains energy.
• What do
• Food chains show the
food chains transfer of energy in an
show?
ecosystem
• What do the• The arrows represent
arrows
the transfer of energy.
represent?
All Food Chains and Webs
start with the sun. The
sun is the source of all the
energy on the earth.
What do
food chains
start with?
• Almost all Food Chains
start with the sun
What type of
organism is
after the sun?
• After the sun is an
organism that can do
photosynthesis. Like
plants and phytoplankton.
Describe
photosynthesis
.
• Sunlight + Carbon Dioxide
+ Water = Energy
– This process is called
Photosynthesis
• Sample food • Sun →milkweed → aphid
chains:
→ladybug →bird →
mushroom
• Sun → grass → zebra → lion
→ vulture
• Sun → seeds →
grasshopper→ mouse →
hawk
• THE ARROWS SHOW THE
DIRECTION THAT THE
ENERGY MOVES
• Producers
Flowers
Tree
Phytoplankton
• An organism that can
make its own food . They
use carbon dioxide,
water and sunlight to
make energy, through a
process called
photosynthesis.
• Producers are the source
of all food in an
ecosystem. Without
producers there is no
food chain.
Sun
Producer
Plants need light for
photosynthesis
We call plants producers
because they produce
energy from the sun
directly.
• Decomposers • Organisms that break
down wastes and dead
organisms and return
the raw materials to
the environment.
• At the end of the food
chain
• Two major groups of
decomposers are:
– Bacteria
– Fungi
Decomposer clips: 1, 2
• Consumers
• An organism that
obtains energy by
feeding on other
organisms.
• Ex: Deer, Humans,
Snakes, Bat, Cat,
Hippopotamus,
Cricket, Rabbit
• Herbivores
• Herb is latin for
plant
• Herbivores are
consumers that
eat only
producers. (plant
eaters)
• Ex: Butterflies,
deer, elephants,
giraffes, mice.
Sun
Producer Primary
Consumer
• Omnivores
• Omni is latin for
all or everything.
• Consumers that
eat BOTH
consumers and
producers. (both
meat eaters and
plant eaters)
• Ex. Humans,
Bearded Dragons,
Turtles, Bears.
• Carnivores
• Consumers that eat
ONLY other
consumers.
• Carn is Latin for
( Meat -Eaters)
flesh or meat.
• Ex: T-rex, Tigers,
Lions, Ladybugs,
Spiders.
Insectivores
(type of
carnivore)
• Animal that eats
insects
• Ex: bats, shrews,
aardvarks,
anteaters, and
others
• Example clips:
aardvark, shrew,
anteater
A pig eats fruit, eggs, corn,
and earthworms.
Omnivore
A frog eats insects,
earthworms, and spiders.
eats grass, leaves,
twigs, and shrub
Herbivore
A raccoon eats almost anything
including berries, acorns, baby
mice, baby birds & eggs, frogs,
fish, and even some snakes.
Omnivore
Spiders eat insects.
Carnivore
(Insectivore)
A giraffe lives in Africa and eats
leaves from trees. A giraffe may
eat 75 pounds of food each day.
Herbivore
A wolf eats deer, dogs, fish,
mice, moose, birds, and other
herbivores.
Carnivore
Rabbits eat grasses,
weeds, leaves, shoots,
twigs, and bark.
Herbivore
Lions eat other animals
such as gazelles,
antelopes, and zebras.
Carnivore
Sheep eat grass and
hay.
Herbivore
Eagles eat fish, mammals,
birds, and snakes. They
love fish!
Carnivore
eats grass and hay
Herbivore
eats corn, twigs, shoots,
acorns, fruit, berries, green
plants
Herbivore
A grizzly bear usually eat things
such as grasses, roots, berries,
insects, fish, and small and large
mammals.
Omnivore
Omnivore
eat 150 pounds of plants
each day
Herbivore
Scavenger
• Scavengers are animals
that eat dead animals
• Their role in the ecosystem
is to contribute to the
decomposition of dead
animal remains.
• Scavengers open up
animal bodies so they can
eat them.
• Example Clip: Vultures
What’s Wrong ???
Bacteria
Decomposer
Plant
Producer
Butterfly
Primary
Consumer
Herbivore
Bird
Bacteria
Secondary
Decomposer
Consumer
Omnivore
Cactus
Sun
1st Consumer
Herbivore
Bird
Cactus
2rd Consumer
Producer
Carnivore
BirdSnake
Primary
3rd Consumer
Consumer
Carnivore
Herbivore
Sun
Snake
Decomposer
Secondary
Consumer
Carnivore
Sun Mushroom Caterpillar
Producer
Primary
Consumer
Herbivore
Leaves
Producer
Frog
Secondary
Consumer
Carnivore
Mushroom
Platypus
Decomposer
Tertiary
Consumer
Carnivore
,
,
Sun
Grass
Producer
,
Dung Beetle
Primary
Consumer
Herbivore
,
Dung
Lion
Beetle
Zebra
Decomposer
Primary
Secondary Secondary
Tertiary
Consumer Consumer
Carnivore
Herbivore
________________________

Sun
Mustard
Seed
Producer


Mustard
Plant
Primary
Producer
Consumer
Bee
Mushroom
Herbivore
Decomposer
Mushroom
Producer

Apple
Tree
Producer
/

Apple
Producer
/
Worm
Herbivore
Primary
Consumer
/
Crow
Carnivore
Secondary
Consumer








Sun
Zooplankton
Fish
Fish
Phytoplankton Phytoplankton
Primary
Tertiary
Secondary
Secondary
Producer
Consumer
Consumer
Consumer
Consumer
Herbivore
Omnivore
Carnivore
Omnivore
Pelican
Tertiary
4th
Consumer
Carnivore




Sun
Soil
Producer
Plant
Producer
Rabbit
Fox
Primary
Primary
Consumer
Consumer
Herbivore
Carnivore
Rabbit
Fox
Secondary
Consumer
Herbivore
Carnivore





Sun
Bacteria
Fish
Phytoplankton
Producer
Primary
Producer
Consumer
Herbivore
Sea lion
Secondary
Consumer
Carnivore
Great
Phytoplankton
Bacteria
White
Decomposer
Decomposer
Shark
Tertiary
Consumer
Carnivore




Sun
Algae
Producer
Shrimp
Shrimp
Primary
Primary
Consumer
Consumer
Herbivore
Carnivore
Arctic Cod
Secondary
Consumer
Carnivore
Seal
Tertiary
Consumer
Carnivore




Sun
Tree
Tree
Omnivore
Producer
Earthworm
Primary
Consumer
Herbivore
Earthworm
Decomposer
Sloth
Primary
Consumer
Herbivore
Jaguar
Secondary
Consumer
Carnivore
Clownfish
Primary
Consumer
Herbivore


Sun
Sea
Grass
Producer


Sea Turtle
Secondary
Consumer
Omnivore