Download Topic: Ecology

Do Now:
1. What is biodiversity?
2. The more biodiversity there is, the
more _____ there is in the ecosystem.
3. How biodiversity an advantage to
humans?
1. Meat eaters are called _______________.
2. An animal which feeds on animals which have
been already killed is called a(n) __.
3. Plant eating organisms are known as ____.
4. Organisms that consume both plants and animals
are ___.
6. A carnivore which kills its own food is a __.
7. All of the interacting organisms of different
species in a given location comprise a(n) __.
8. ____ factors include living things in the
environment, such as disease and predation.
9. An organism such as a mushroom on a rotting log,
which ingests decaying organic material is called
a(n) ____.
Topic: Ecology
MI: Feeding
Relationships
Main source of energy
• sunlight
Habitat
• Part of the environment in
which an organism lives
• Organism’s “address”
Niche
• The role of a species in the
environment
• Examples: how, when, or way they
obtain nutrients, its reproductive
behavior
Niches__How_Animals_Fit_Into_Ecology.asf
When 2 organisms occupy the
same niche
• Competition occurs
Paramecium caudatum
Paramecium aurelia
Species grown together
Food chain
Grass  Grasshopper  Sparrows
producers
primary
secondary
consumer
consumer
(TROPHIC LEVELS)
Decrease in energy
Trophic_Levels_in_a_Food_Chain.asf
 Hawks
tertiary
consumer
Food web
• More complex
Food_Chains_and_Webs.asf
Pyramid of energy
- Shows amount of energy available in an
ecosystem
Tertiary consumers
Secondary consumers
Primary consumers
Producers
Energy_Pyramids.asf
Biomass.asf
Energy
decreases
Which statement best describes
one of the levels of this
pyramid?
(1.) The organisms in level B
obtain food directly from level
A.
(2.) Level D contains the
greatest number of
heterotrophs in the pyramid.
(3.) level C contains the largest
group of consumers in the
pyramid.
(4.) Level A contains the largest
producers in the pyramid.
Which statement is best
supported by the
information shown in the
pyramid?
(1.) Chipmunks and insects can
occupy the same niche.
(2.) As the number of bears
in this community
increases, the number of
chipmunks will increase.
(3.) Insects are classified as
omnivores in alpine meadow
communities.
(4.) Biomass decreases as
energy is transferred from
one level to another.