Life and Living Ecosystems: Food Webs in Grade 6
Natural Sciences and Technology
Grade 6
Term 1: Life and Living
Ecosystems and Food Webs
Topic 5
Ecosystems and Food Webs
Food Webs
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
A Simple Food Chain
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
A Simple Food Chain
•
A
food chain
shows how each
living thing gets
food
, and how
nutrients
and
energy
are passed
from creature to creature.
•
Food chains
begin with
plant-
life,
and end with
animal-life
.
•
Some animals eat plants
(
herbivores
).
•
Some animals eat other animals
(
carnivores
).
•
S
o
m
e
a
n
i
m
a
l
s
e
a
t
p
l
a
n
t
s
a
n
d
o
t
h
e
r
a
n
i
m
a
l
s
(
o
m
n
i
v
o
r
e
s
)
.
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
Food Web
•
W
h
e
n
w
e
j
o
i
n
m
a
n
y
d
i
f
f
e
r
e
n
t
f
o
o
d
c
h
a
i
n
s
i
n
a
n
e
c
o
s
y
s
t
e
m
t
o
g
e
t
h
e
r
,
w
e
g
e
t
a
f
o
o
d
w
e
b
.
•
A
food web consists
of many thousands
and thousands of
food chains that are
connected to each other.
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
In an
ecosystem
the
plants
and
animals
are connected
by their feeding relationships:
•
P
r
o
d
u
c
e
r
s
=
p
l
a
n
t
s
•
C
o
n
s
u
m
e
r
s
=
a
n
i
m
a
l
s
•
herbivores eat plants,
•
carnivores eat the animals that eat the plants,
•
omnivores eat plants and animals.
•
D
e
c
o
m
p
o
s
e
r
s
=
m
i
c
r
o
o
r
g
a
n
i
s
m
s
s
u
c
h
a
s
b
a
c
t
e
r
i
a
a
n
d
f
u
n
g
i
)
•
eat and break up the dead animals, and
•
put the chemicals from their bodies (carbon, phosphorus and
nitrogen) back into the soil to feed the plants.
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
Components of the Food Web
Food Web Levels
•
Level 1:
Plants
(producers)
•
Level 2: Animals
that eat plants
or
herbivores (primary consumers)
•
Level 3:
Animals that eat herbivores
(secondary consumers,
carnivores/omnivores)
•
Level 4: Animals that eat carnivores
(tertiary consumers, other carnivores)
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
Gr 6 Natural Sciences and Technology – Term 1, Topic 5
In Grade 6 Natural Sciences and Technology Term 1, students explore ecosystems and food webs through topics like food chains, components of food webs, and food web levels. Understanding how plants, animals, and microorganisms are connected through feeding relationships is essential in grasping the intricate balance within ecosystems. The concept of food webs illustrates the complexity of interactions among producers, consumers, and decomposers in nature. Through engaging visuals and explanations, students delve into the interconnected relationships that sustain life in diverse ecosystems.
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Presentation Transcript
Natural Sciences and Technology Grade 6 Term 1: Life and Living Ecosystems and Food Webs
Topic 5 Ecosystems and Food Webs Food Webs Gr 6 Natural Sciences and Technology Term 1, Topic 5
A Simple Food Chain Gr 6 Natural Sciences and Technology Term 1, Topic 5
A Simple Food Chain A food chain shows how each living thing gets food, and how nutrients and energy are passed from creature to creature. Food chains begin with plant- life, and end with animal-life. Some animals eat plants (herbivores). Some animals eat other animals (carnivores). Some animals eat plants and other animals (omnivores). Gr 6 Natural Sciences and Technology Term 1, Topic 5
Food Web When we join many different food chains in an ecosystem together, we get a food web. A food web consists of many thousands and thousands of food chains that are connected to each other. Gr 6 Natural Sciences and Technology Term 1, Topic 5
Components of the Food Web In an ecosystem the plants and animals are connected by their feeding relationships: Producers = plants Consumers = animals herbivores eat plants, carnivores eat the animals that eat the plants, omnivores eat plants and animals. Decomposers = microorganisms such as bacteria and fungi) eat and break up the dead animals, and put the chemicals from their bodies (carbon, phosphorus and nitrogen) back into the soil to feed the plants. Gr 6 Natural Sciences and Technology Term 1, Topic 5
Food Web Levels Level 1: Plants (producers) Level 2: Animals that eat plants or herbivores (primary consumers) Level 3: Animals that eat herbivores (secondary consumers, carnivores/omnivores) Level 4: Animals that eat carnivores (tertiary consumers, other carnivores) Gr 6 Natural Sciences and Technology Term 1, Topic 5
