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Ecology Unit #4 Review - Roles in an Ecosystem

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

What type of organism is a mushroom?

a)

producer

b)

consumer

c)

decomposer

2.

What type of organism is a buffalo?

a)

producer

b)

consumer

c)

decomposer

3.

What type of organism is bacteria?

a)

producer

b)

conusmer

c)

decomposer

4.

What type of organism is a tree?

a)

producer

b)

consumer

c)

decomposer

5.

What type of organism does photosynthesis occur in?

a)

producer

b)

consumer

c)

decomposer

6.

What type of organism recycles nutrients and returns them to the environment?

a)

producer

b)

consumer

c)

decomposer

7.

What type of organism must obtain energy by eating other organisms?

a)

producer

b)

consumer

c)

decomposer

8.

A racoon that eats both plants and animals is an __________.

a)

herbivore

b)

carnivore

c)

omnivore

9.

A lion that eats other animals is an example of a __________.

a)

herbivore

b)

carnivore

c)

omnivore

10.

The source of all energy in an ecosystem comes originally from the _________.

a)

consumers

b)

producers

c)

sun

11.

Based on what this organism is eating in the picture, what is it?

a)

Decomposer

b)

Consumer (carnivore)

c)

Consumer (herbivore)

12.
What does "energy role" mean?
a)
how an organism gets its energy
b)
how organisms compete for limited resources
c)
how populations grow and develop over time
13.

Another word (a synonym) for a producer.

a)
consumer
b)
autotroph
c)
heterotroph
14.

Hetetrotroph is another word (a synonym) for __________.

a)
scavenger
b)
producer
c)
consumer
15.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
A single path of energy transfer within a habitat.
16.

The arrows in a food chain or web represents what?

a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
17.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
The amount of energy available to the next 'feeder' in a food web.
18.

How much energy is available to be passed on to the next trophic level in an ecosystem?

a)
100%
b)
10%
c)

90%

19.

Overlapping food chains in an ecosystem make up a __________.

a)
food web
b)
food chain
c)
niche
20.
Which of this energy roles is always located at the bottom of an energy pyramid?
a)

producers

b)

carnivores

c)

herbivores

21.
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)
This organism gets its energy from multiple sources. 
c)
They have no resources available to them.
22.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
Foxes would dies due to no food source. 
23.

The shrew provides energy for the __________.

a)
grasshopper
b)
frog
c)
snake
24.
Where does the energy start in this food chain?
a)

plant

b)

sun

c)

wolf

25.
Which organism has the most energy and which organism has the least amount of energy? Choose the best answer. 
a)
mosquito and flower
b)
mouse and flower
c)
flower and owl

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