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ecosystems review

Total questions: 50

Worksheet time: 2hrs 6mins

Name
Class
Date
1.
_______ are consumers that eat only meat.
a)
Herbivore
b)
Omnivore
c)
Carnivore
2.
________ are consumers that eat plants and meat.
a)
Herbivore
b)
Omnivore
c)
Carnivore
3.
Which group do fungi, bacteria, and termites belong to?
a)
decomposers
b)
producers
c)
herbivores
d)
omnivores
4.

Which organisms make their own food through the process of photosynthesis?

a)

decomposers

b)

consumers

c)

herbivores

d)

producers

5.

Field mice eat corn. Which would most likely happen if the field mouse population grew?

a)

There would be more corn to feed the field mice.

b)

There would be less corn due to the mice eating it.

c)

The habitat would get overpopulated because the mice would eat too much.

6.
Which describes a decomposer?
a)
an organism that eats only plants
b)
an organism that makes its own food
c)
an organism that breaks down dead matter
d)
an organism that recieves energy from the sun
7.
If the population of prey increases, the population of predators will ________because of the availability of food.
a)
decrease
b)
stay the same
c)
increase
8.
What are interconnected food chains called?
a)
consumers
b)
predators
c)
food web
9.
What would most likely happen if an ecosystem no longer received sunlight?
a)
The number of herbivores would increase
b)
The number of plants would increase
c)
all organisms would adapt
d)
All living organisms would eventually die
10.
All food chains_____________________
a)
have more consumers than producers
b)
produce and use same amount of energy
c)
begin with a producer
d)
are unhealthy 
11.
How does energy enter an ecosystem? 
a)
sunlight
b)
soil 
c)
animals 
d)
invasive species 
12.
Pollution is anything that people add to the environment that__________________. 
a)
disappearing particles 
b)
benefits an ecosystem
c)
produces plants 
d)
harms living things 
13.
A lion, captures and eats other animals. What is he considered? 
a)
prey
b)
predator
c)
producer 
d)
healthy 
14.
How do consumers get their energy? 
a)
laying in the sun
b)
eating other organisms 
c)
providing food for other organisms
d)
surviving in an ecosystem 
15.
A system made up of organisms interacting with one another
a)
biology
b)
abiotic
c)
biotic
d)
ecosystem
16.
Organisms that make up the living part of an ecosystem.
a)
abiotic
b)
biotic factors
c)
ecology
d)
ecosystems
17.
Nonliving things found in an ecosystem.
a)
factories
b)
factor trees
c)
biotic factors
d)
abiotic factors
18.

Which is a biotic factor?

a)

sunlight

b)

air

c)

bacteria

d)

elevation

19.
Deserts, mountains, and rivers are all examples of ________.
a)
vacation spots
b)
tundra
c)
ecosystems
d)
wetlands
20.
In an ecosystem, producers and consumers are both __________.
a)
biotic factors
b)
very nice
c)
cranky
d)
abiotic factors
21.
An individual living thing is a/an __________.
a)
habitat
b)
ecosystem
c)
organism
d)
population
22.
The place where an organism lives is its _________.
a)
habitat
b)
abiotic
c)
ecosystem
d)
community
23.
All of the nonliving parts of an ecosystem are _______.
a)
biography
b)
biotic
c)
abiotic
d)
biology
24.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
25.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
26.
Which are abiotic factors?
a)
fish
b)
humans
c)
rocks
d)
cats
27.
Which organisms are in competition for the same food?
a)
fox and owl 
b)
spider and fly 
c)
rabbit and mouse
d)
deer and owl 
28.

What is an adaptation?

a)

A feature or behavior that helps an animal survive.

b)

The food that an animal eats.

c)

How energy moves in a food web.

29.

How do adaptations help animals?

a)

To escape animals

b)

To hunt for food

c)

To survive in their habitats

d)

All of these are correct

30.

An example of a physical adaptation is...

a)

a turtle hiding inside its shell

b)

the spikes on a porcupine fish

c)

a rabbit burrowing underground

d)

a viper biting when threatened

31.

Which is the best description of an ecosystem?

a)

all of the living and nonliving things in an area

b)

all the individuals of a species in an area

c)

all of the populations of living things in an area

d)

all of the abiotic factors in an area

32.
What is the role of a tree in a food chain?
a)
It breaks down wastes and dead organisms
b)
It uses the sun's energy to make food.
c)
It eats other organisms.
d)
It cannot make its own food.
33.

A rabbit blending in with its environment is called

a)

camouflage.

b)

counter shading.

c)

mimicry.

34.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
35.
What is the gas we breath out that plants use for photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
36.

Use the diagram to answer the question.

The Mayfly is a food source for which 3 organisms?

a)

Frog, Dragon Fly and Snake

b)

Frog, Trout and Dragon Fly

c)

Frog, Salamander and Trout

d)

Frog and Phytoplankton

37.

What are the species that were originally in a location? (not brought in from somewhere else)

a)

Invasive Species

b)

Introduced Species

c)

Native Species

d)

Natural Species

38.

What are the features or behaviors that help an animal to survive in its environment?

a)

habitats

b)

environments

c)

adaptations

d)

climates

39.
What is it called when an animal only comes out at night?
a)
hibernate
b)
environment
c)
nocturnal
d)
habitat
40.

What is any living thing called?

a)

an organism

b)

a population

c)

a community

d)

an ecosystem

41.
What is included in an ecosystem?
a)
plants
b)
animals
c)
water
d)
all of these
42.
In an ecosystem, grass is eaten by mice and mice are eaten by snakes.  If the snake population increases, what happens to the mouse population?
a)
increases
b)
decreases
c)
stays the same
43.
In an ecosystem, grass is eaten by mice and mice are eaten by snakes.  If the mouse population increases, what happens to the grass population?
a)
increases
b)
decreases
c)
stays the same
44.
In an ecosystem, grass is eaten by mice and mice are eaten by snakes.  If the mouse population decreases, what happens to the grass population?
a)
increases
b)
decreases
c)
stays the same
45.
In an ecosystem, grass is eaten by mice and mice are eaten by snakes.  If the mouse population decreases, what happens to the snake population?
a)
increases
b)
decreases
c)
stays the same
46.
Which population would be most affected if there is a decrease in the population of aquatic insects?
a)
elk
b)
frog
c)
moose
d)
squirrel
47.
Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the most likely outcome for the ecosystem?
a)
Biodiversity would decrease, and sustainability would decrease.
b)
Biodiversity would decrease, and sustainability would increase.
c)
Biodiversity would increase, and sustainability would increase.
d)
Biodiversity would increase, and sustainability would decrease.
48.
A rainforest area is experiencing a severe drought. As a consequence, the insect population has decreased. What will the insect-eating birds most likely do as a result of the drought?
a)
stop searching for food until it begins to rain
b)
begin reproducing to increase population
c)
move to a new area to find food
d)
start the process of hibernation
49.
Which is an abiotic factor that would affect the growth of a population within an ecosystem?
a)
the availability of water
b)
the availability of producers
c)
the type of herbivores present
d)
the number of carnivores present
50.

Identify the food chain that demonstrates the flow of energy in this food web.

a)

Plant>Snail>Bluebird>Eagle

b)

Plant<Snail<Bluebird<Eagle

c)

Plant>Snail<Bluebird>Eagle

d)

Plant>Rabbit<Eagle

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