
list the possible interactions that might
exist between different species living close
to each other.

Species A
Zebra
Human
Big Bird
Bee
Species B
Lion
Tapeworm
Small Bird
Flower

Three people check into a hotel. They pay
£30 to the manager and go to their room.
The manager suddenly remembers that
the room rate is £25 and gives £5 to the
bellboy to return to the people. On the way
to the room the bellboy reasons that £5
would be difficult to share among three
people so he pockets £2 and gives £1 to
each person. Now each person paid £10
and got back £1. So they paid £9 each,
totalling £27. The bellboy has £2, totalling
£29. Where is the missing £1?
Habitat

Habitat - Area Where Organism Lives
(Address)


Biotic and Abiotic Factors included
A pond:
Niche
A species’ job or role in a
community is called its niche.
These jobs are vital to the
survival of a community.
Some niches are basic.

Earthworms improve
soil for plants and
creatures.



Earthworms look for
food in the soil.
They loosen the soil.
This allows water and
air to pass through.
Some niches are complex.
Niche
of the Squirrel
Squirrel
nests in
a tree trunk.
Scrambling
through
branches, the squirrel
breaks off twigs. This
pruning helps the tree
grow.
The
squirrel
robs bird eggs.
The
squirrel is
food for owls
and hawks.
Some
of the nuts that
the squirrel buries grow
into trees, enlarging
forest.
The
waste droppings from
the squirrel enrich plant
growth by fertilizing the
ground.
What’s Your Niche?

Describe your “niche” in your family.
Do you have the same “niche as
anyone in your family?
Competitive Exclusion Principle

No two species can possess the same
niche in the same habitat.
Symbiosis
Ecology
Symbiosis

Symbiosis is a close relationship between
two organisms.
 One organism lives near the other
 One organism lives on the other
 One organism lives inside the other
At
least one organism benefits.
3 Types of Symbiosis

Commensalism

Mutualism

Parasitism
Commensalism

Little birds gain
protection from big
birds.

One benefits and the
other is not harmed.
Mutualism

Both organisms
benefit.

Neither organism is
harmed.
Parasitism

One organism
benefits.

The other is harmed.
Video Clips



Make a prediction for each interaction.
While the video is showing think about the
real relationship.
We will discuss actual relationship after
the video.