39
2
Match each word with its definition. Copy them in your notebook.
a)
population
1.
all the non-living things in an ecosystem
b)
biotope
2.
all the plants and animals in an ecosystem
c)
community
3.
a group of animals of the same species that live together
d)
biocoenosis
4.
a group of different species that live in the same ecosystem
3
T
h
i
n
k
!
Look at these photos and do the activities in your notebook.
a)
What kind of relationship does each photo show, intraspecific or interspecific? Why?
1)
2)
A lion family
A buffalo and an egret
b)
Complete these sentences to explain your answer.
The ... have an ... relationship because the family members belong to ... species.
The ... have an ... relationship because each animal belongs to ... species.
c)
27
Listen and check your answers.
4
Take photos of your local park’s ecosystem. Classify the photos:
animals plants non-living things
5
28
QUIZ
Check your learning.
A
C T I V I T I E S
There can be many different organisms in an ecosystem. These organisms don’t
usually live in isolation, they form groups called populations and communities.
A
population
is a group of organisms that live together and belong to the same
species. A
community
is a collection of different populations that live together
in one place. Which populations live in this ecosystem?
In an ecosystem, we can classify the relationships between individual organisms.
Intraspecific relationships
exist between individual members of the same
species. For example, in the illustration on the right, the population of ducks
have an intraspecific relationship.
Interspecific relationships
exist between individual members of different
species. For example, ducks and eagles have an interspecific relationship.
These ducks are a population
because they belong to the
same species.
