Download Producers

Biology CP
Homework
• Food Chain and Food Web Quiz
9-4-15
Ch.14.1 p.258
1. What is the difference between a
community and a habitat?
A community is
the organisms
that live in a
particular place
whereas a
habitat is the
place they live.
Ch.14.1 p.258
2. Explain the important role
producers play in ecosystems?
Producers are the fundamental source
of nutrition (consumable energy) in an
ecosystem.
Ch.14.1 p.258
3. In which trophic level would you
place humans? Explain.
Omnivore humans
would be near the
top. Herbivore
humans would be
near the bottom.
Ch.14.1 p.258
4. Why are there fewer lions than
zebras on the African Plains?
Only 10% of energy
is passed to each
trophic level.
Got Energy Activity
• Need: Scissors, tape, Got Energy
Worksheet, half sheet of animals
• Do: Answer Questions and make
food web
Energy Flow
• Energy is needed to power life!
• Energy flows through the ecosystem.
Producers
• Organisms that make their own food
without consuming another living
organism are called producers.
• Also known as autotrophs
Producers: Photosynthesis
• Sunlight is the main source of energy
for most ecosystems on Earth.
• Organisms use a process called
photosynthesis to convert sunlight
into energy.
Producers: Photosynthesis
Producers: Chemosynthesis
• Some ecosystems rely on energy
obtained from organisms that store
energy in inorganic chemical
compounds.
• Organisms use a process called
chemosynthesis to convert inorganic
chemical compounds into energy.
Producers: Chemosynthesis
Consumers
• Organisms that cannot make their
own food or energy have to
consume (eat) other organisms. This
organisms are called consumers.
• Also called heterotrophs.
Consumers: Herbivores
• Eat Producers (plants)
Consumers: Carnivores
• Eat consumers (meat)
Consumers: Omnivores
• Eat producers and consumers
(plants and animals)
Consumers: Detritivores
• Eat dead organisms
Consumers: Decomposers
• Eat/break down decomposing
material
Energy Flow
• Energy flows through an ecosystem in
one direction from the sun or
inorganic molecules to producers
(autotrophs) and then to consumers
(heterotrophs).
Food Chain
• Food Chain is a series
of steps in which
organism transfer
energy by eating and
being eaten.
Food Web
• Food Web is all of the feeding
relationships among various organisms
in an ecosystem.
Food Web
• Each step on a food web is a trophic
level.
Ecological Pyramid
• An ecological pyramid is a diagram
that shows the relative amounts of
energy or matter contained at each
trophic level of a food web.
Ecological Pyramid
• Only about 10% of the energy
available within one trophic level is
transferred to organisms at the next
trophic level.