Interactions of living things 2Presentation Transcript
1.) Ecology is the study of the interactions
between organisms and their
An Organized Environment
An individual organism is the basic level
A population is a group of organisms of the
same species living in a specific area (all of
A community is made of all the populations
of different species in a given area. (Only
all the biotic factors).
An ecosystem is made of a community of
organisms and its abiotic factors (biotic and
How do they get their energy?
Producers – carryout the process of
photosynthesis and make their own food
7. Decomposers – break down the
remains of dead organisms to obtain
8. Consumers – eat other organisms.
There are 4 types:
9.)A herbivore only eats plants.
10.) A carnivore only eats animals.
11.) An omnivore eats both plants and animals.
12.) A scavenger eats the bodies of dead animals.
Environmental Organization Quiz
All the biotic and abiotic factors in a
given area is known as __________.
Organisms that only eat animals are
The study of the interactions between
organisms and their environment is
Organisms that eat both plants and
animals are ________.
Organisms that only eat plants are
Limiting Factors PowerPoint
"Nature Works“ Website
GREAT review video http://www.youtube.com/watc h?v= Q7htrA8JVrg
http://www.nhptv.org/natureworks/nw ep12a .htm
The Food Chain
13. The food chain is
a representation of
how energy flows
from one organism
to the next.
The arrows represent
the flow of energy.
They do not represent
what eats what.
The Food Web
14. The food web is a representation of
overlapping food chains.
#15. An energy
pyramid is a
representation of how
energy is consumed as
it moves through the
food chain or food web.
As you move up the
pyramid, a smaller
amount of energy is
The largest part of
energy is located at the
base of the pyramid
with the producers.
Where do we belong?
#16a An organism’s habitat is the
environment in which it lives.
#16b An organism’s way of life or role in
the ecosystem is its niche. It includes
the organism’s habitat, food, predators
Types of Interactions
1. Prey is the organism that is eaten. (fish)
2. The predator is the organism that eats
the prey. (alligator)
Many times the predator becomes the prey
and the prey becomes the predator.
Think back to the food web for
#18 Symbiosis (ppt) is a close, long-term
association between two or more
There are three types of symbiosis:
1. Mutualism is when both organisms
benefit from the association.
Commensalism is when one organism
benefits and the other is unaffected.
shark with remora
Parasitism is when one organism is
helped and the other is harmed.