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Worksheets7.5B Energy Flow Through Ecosystems
Total questions: 33
Worksheet time: 3hrs 36mins
Name
Class
Date
1.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
2.
What does a Primary Consumer eat?
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Producers
3.
A third-level consumer has to be which type?
a)
Carnivore.
b)
Decomposer.
c)
Producer.
d)
Herbivore.
4.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
5.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
6.
Bacteria, fungi, and earthworms are examples of:
a)
scavengers
b)
predators
c)
prey
d)
decomposers
7.
What is missing from this food chain?
Grass > Grasshopper > Bird > Snake
Grass > Grasshopper > Bird > Snake
a)
Producer
b)
Primary Consumer
c)
Secondary Consumer
d)
Decomposer
8.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
9.
__________ is an organism that eats BOTH plants and animals for energy.
a)
Omnivore
b)
Darnivore
c)
Carnivore
d)
Herbiovre
10.
If the grasshopper were to be removed completely from the food web, what organism would be most effected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
11.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
12.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
13.
Which level has the most energy available?
a)
producer
b)
primary consumer
c)
secondary consumer
d)
tertiary consumer
14.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
15.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
16.
How much energy is available to be passed on to the next trophic level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
17.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
18.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
19.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
20.
What is a trophic level?
a)
Each level represented within a food chain or web.
b)
Levels of ecosystems that the world is divided into.
c)
Different levels of nutrients present within an organism.
d)
The levels of sunlight an autotroph needs to survive.
21.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
22.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
23.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them.
b)
They may eat more than one other organism.
c)
This organism gets its energy from multiple sources.
d)
They have no resources available to them.
24.
Which answer best describes the transfer of energy as it moves up the energy pyramid?
a)
Energy gets larger as you go up the pyramid.
b)
Energy gets smaller as you go up the pyramid.
c)
Energy stays the same as you go up the pyramid.
d)
What is energy?
25.
About how much energy is LOST when an organism consumes another organism from a different trophic level?
a)
10%
b)
90%
c)
50%
d)
25%
26.
Where do producers get their energy from?
a)
Decomposers
b)
Primary Consumers
c)
Secondary Consumers
d)
The Sun
27.
What is another word for producer?
a)
Heterotroph
b)
Autotroph
28.
What is another word for consumers?
a)
Heterotroph
b)
Autotroph
29.
If the snake has 50 kJ of energy, how much does the grass have?
a)
50
b)
500
c)
5000
d)
5
30.
If the grass has 4360 kJ of energy, how much energy does the owl get?
a)
436
b)
4.36
c)
46
d)
4360
31.
If the rabbit has 240 kJ of energy, how much does the snake get?
a)
240
b)
2400
c)
2
d)
24
32.
A secondary consumer
a)
eats primary consumers
b)
eats producers
c)
eats plants
33.
Position that an organism occupies based on what it eats
a)
biomass
b)
autotroph
c)
trophic level
d)
carnivore
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