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WorksheetsFood Chains and Changes in Ecosystem
Total questions: 31
Worksheet time: 23mins
Name
Class
Date
1.
What is another name for producer?
a)
consumer
b)
herbivore
c)
plant
d)
decomposer
2.
What does every food chain start with?
a)
producers
b)
sun
c)
consumer
d)
decomposers
3.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Consumer
b)
Producer
4.
Consumer that eats plants
a)
secondary consumer
b)
primary consumer
c)
producer
d)
tertiary consumer
5.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
6.
Where is the most energy in this food pyramid?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
Tertiary Consumers
7.
What does a Secondary Consumer eat?
a)
Tertiary Consumers
b)
Primary Consumers
c)
Producers
d)
Secondary Consumers
8.
Energy increases as you move up the food pyramid (from bottom to top).
a)
True
b)
False
9.
Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?
a)
The rabbit population may increase
b)
The rabbit population may decrease
c)
The rabbit population may increase first, then decrease
d)
The rabbit population will remain the same
10.
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.
d)
They represent how water is transferred within a habitat.
11.
What would happen to the grass if the fox population increased?
a)
Stay the same
b)
Increase
c)
Decrease
12.
What would happen to the rabbit population if the grass population increased?
a)
Stay the same
b)
Increase
c)
Decrease
13.
An animal that hunts other animals for food is a ___________
a)
herbivore
b)
predator
c)
prey
d)
omnivore
14.
Which is an example of equilibrium?
a)
Populations of animals and plants changing drastically over time
b)
A forest fire happening and destroying all producers in a forest
c)
Populations of animals and plants staying about the same over time
d)
Populations of some animals in a food web changing drastiacally over time
15.
When a population grows past the ecosystem's state of equilibrium, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to original equilibrium
c)
The population will go extinct due to lack of resources
16.
If there is more food than usual in an ecosystem, then the population will mostly likely...
a)
stay the same
b)
decrease
c)
increase
d)
reach carrying capacity
17.
In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
a)
Squirrel Population
b)
Sunlight
c)
Grass available
d)
Rabbits have no limiting factors
18.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
19.
Which type of consumer could be a first or second consumer?
a)
Herbivore
b)
Omnivore
c)
Carnivore
d)
Producer
20.
Which type of consumer is always a first consumer?
a)
Herbivore
b)
Omnivore
c)
Carnivore
d)
Producer
21.
Eat primary consumers (can be carnivores and omnivores)
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Quaternary Consumers
d)
Top Predators
22.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)
population
23.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
24.
Name the producers in this food web.
a)
seagull and fish
b)
penguin and crab
c)
phytoplankton and seaweed
d)
seaweed and zooplankton
25.
What type of consumer is the wolf?
a)
herbivore
b)
omnivore
c)
carnivore
d)
decomposer
26.
The shrew provides energy for the _______.
a)
cricket
b)
grasshopper
c)
frog
d)
snake
27.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
28.
Does this food web have arrows pointing the right way?
a)
Yes
b)
No
29.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
30.
Click on the map to help answer this question: What can we predict about the population of Feral Swine for the year 2016?
a)
There will be less feral swine in 2016 than there were in 1982.
b)
There will be more feral swine in 2016 than there were in 2010
c)
There were fewer feral swine in 2004 than 1982.
d)
There will be no change in feral swine population.
31.
How many herbivores are in this web?
a)
1
b)
2
c)
3
d)
4
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