Food Chains, webs, and energy pyramids

Food Chains

A series of organisms each
dependent on the one before
as a source of food.

Produce
their own
food using

photosynthesis

Capable of self-nourishment:
Ex: Photosynthesis

Multiple Select

What is a producer? (Watch out! two possible answers!)

• plant

• autotroph

• animal

• heterotroph

First to EAT in
the food chain.
They consume
plants (producers).

hunted

PLANT

Eaters

Second to EAT in
the food chain.
They consume

primary

consumers.

Third to EAT in
the food chain.
They consume

secondary
consumers.

hunter

PLANT

Eaters

MEAT OR

Multiple Choice

What is an omnivore?

• Only meat eaters

• Only plant eaters

• They eat both meat and plants.

Fourth to eat.
*Quarternary
consumer or
Apex Predator

EX: Human

always
hunting

MEAT

Eaters

Multiple Choice

What does the arrow in a food chain mean?

• It is the energy passed from one organism to another

• food

• I don't know

Decreases
(Gets used) as it getspassed from one organism to

the next.

Return
Nutrients

Break down dead and
decaying organic matter.

Bacteria
Fungi
Worms

Light is an abiotic (non-living) factor that
influences organisms. It is used in
photosynthesis to convert Carbon Dioxide and
Water into Glucose. This starts the food chain!

Glue in and color
your notes

YOU HAVE 5 MINUTES

energy

ecosystem

what

what

consumer resource

arrow
energy

reduced

level

Multiple Select

What is the difference between a food chain and a food web?

• Food chain is linear, less organisms

  Food web has more organisms interconnected

• they are the same thing

seabird

fish

diving

fish

essential

mammals

fish

fish

consumer

predator

animals

eaten

plants

sun

An energy pyramid

illustrates that ________

available to consumers

___________ as it travels

through a ______ chain. Only

about ______ of the energy

in one _______ passes to

the next. The lost ________

turns into heat.

energy

decreases

food

10%
level

energy

Multiple Choice

How much energy is pass from one level to the next?

• 5%

• 25%

• all of it

• 10%

Producers transform energy

from the _____ into a large

amount of _______ energy

through the process of

________________. They are

also called ____________.

Sun

plant

photosynthesis

autotrophs

When primary
consumers eat
________, they gain
about ______ of the
__________ that the
plants had.

____________ that eat plants

for food.

Herbivores

plants

10%

energy

____________ and

____________ that eat

_________ or ________

and animals.

They gain ______ of the

energy of _________

consumers.

Carnivores
omnivores
animals

plants

10%
primary

_____ ___________ that

are at the top of the

______ chain.

They gain _____ of

___________ consumer’s

energy or ______ of

producers.

Top

predators

food

10%

secondary

0.1%

Decomposers eat

____________ and their

________ from any level!

organisms
waste

Open Ended

Summarize what you have learned in your notes today!