Transcript Consumer

Energy Flow
*Energy Roles:
1. Producer – an organism that can
make its own food.
Examples = plants, algae
2. Consumer – an organism that must
eat other organisms for ENERGY.
(4 types)
4 Types of Consumers:
1. Herbivores –
consumers that only eat
plants = 1st level
consumer
2. Omnivores –
consumers that
eat both plants
and animals =
1st, 2nd or 3rd level
consumers
3. Carnivores –
consumers that only eat
other animals = 2nd or 3rd
level consumers
4. Scavengers – carnivores
that eat dead animals =2nd
or 3rd level consumers
Examples: Vultures, crabs,
catfish
Energy Roles (continued)
3. Decomposers – an organism that
breaks down wastes and dead
organisms and returns the raw
materials back to the environment.
Examples:
Bacteria, molds,
fungi (mushrooms)
#4. Food Chains
Food Chain – a series of events in
which one organism eats another to
gain ENERGY.
Producer  1st level consumer  2nd
level consumer  3rd level consumer.
 Shows energy is transferred to
next organism.
Tree -> Ant -> Bird -> Cat
Food Webs
#5. A food web consists of many overlapping
food chains.
Energy Pyramid
A diagram that shows the amount of
energy available to producers and
consumers at different levels.
FOOD IS ENERGY
Energy is used to grow, move, reproduce
and other functions.
Energy is used AND lost every time we
eat food.
1. What are the 1st level consumers?
2. What are the 2nd level consumers?
Wolf
Bear
Squirrel
Raspberries
Acorns
Deer
Alfalfa
1. The 1st and 2nd level consumer is _____
2. The 2nd and 3rd level consumer is _____
Great Blue Heron
Bluegills (fish)
Turtle
Minnows
Phytoplankton
Snails
Algae
An Ocean Energy Pyramid