Free Printable Factors in an Ecosystems

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Worksheets

Factors in an Ecosystems

Total questions: 43

Worksheet time: 22mins

Name

Class

Date

1.

A living or once-living organisms in an ecosystem is a

a)

population

b)

biotic factor

c)

abiotic factor

d)

community

2.

Bio means _________.

a)

non-living

b)

not/without

c)

life

d)

living

3.

A is the prefix that means ____________.

a)

life

b)

living

c)

not/ without

d)

biotic factor

4.

All nonliving things in an ecosystem are ____________

a)

None

b)

biotic factors

c)

abiotic factors

5.

Which of the following is not an abiotic factor?

a)

sun

b)

temperature

c)

soil

d)

grass

6.

Which of the following is not a biotic factor?

a)

mushroom

b)

air

c)

elephant

d)

coyote

7.

Is a deer an abiotic or biotic factor?

a)

abiotic

b)

biotic

8.

Is a fern an abiotic or biotic factor?

a)

abiotic

b)

biotic

9.

Is a weather an abiotic or biotic factor?

a)

abiotic

b)

biotic

10.

Is sunlight an abiotic or biotic factor?

a)

abiotic

b)

biotic

11.

Temperature, light, air, water, and soil are all _____ parts of the environment

a)

alive

b)

biotic

c)

abiotic

d)

living

12.

Is a dog considered abiotic or biotic?

a)

Abiotic

b)

Biotic

c)

Neither

13.

Is a Cat considered abiotic or biotic?

a)

Abiotic

b)

Biotic

c)

Neither

14.

Is a tree considered abiotic or biotic?

a)

Biotic

b)

Abiotic

c)

Neither

15.

Is water considered abiotic or biotic?

a)

Abiotic

b)

biotic

c)

neither

16.

Is air considered abiotic or biotic?

a)

Abiotic

b)

biotic

c)

neither

17.

Is a rock considered abiotic or biotic?

a)

Abiotic

b)

biotic

c)

neither

18.

Is your cellphone considered abiotic or biotic?

a)

Abiotic

b)

biotic

c)

neither

19.

Is a human considered abiotic or biotic?

a)

abiotic

b)

biotic

c)

neither

d)

both

20.

Which of the following best illustrates this interaction between both abiotic and biotic parts of an environment?

a)

horse

b)

horse and land

c)

sky

d)

sky and pond

21.

Which of the following best illustrates this interaction between both abiotic and biotic parts of an environment?

a)

zebra and pond

b)

tree and shrub

c)

hill and shadow

d)

bacteria and bird

22.

Which of the following best illustrates this interaction between both abiotic and biotic parts of an environment?

a)

water and air bubbles

b)

shark and seaweed

c)

Pikachu and Ash

d)

fish and water

23.

Which of the following best illustrates this interaction between both abiotic and biotic parts of an environment?

a)

gym door and a basketball

b)

tennis shoes and track runners

c)

white board with markers

d)

basketball player bleeding

24.

Which of the following best illustrates this interaction between both abiotic and biotic parts of an environment?

a)

abiotic dirt blew away in the biotic wind

b)

abiotic wind blows on the biotic dirt

c)

abiotic elephant walked with the biotic alligators

d)

biotic elephant drank from the abiotic water

25.

How many biotic species are there? _{(Each variety of plants counts as one, so each grass is just one)}

a)

0

b)

2

c)

5

d)

10

e)

15+

26.

The thing the turtles are sitting on is..._{(they are in the bottom left)}

a)

abiotic

b)

biotic

27.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

a)

There would be a decrease in the small bird population.

b)

There would be a decrease in the grass/flowers population.

c)

There would be a decrease in the mice population.

d)

There would be an increase in the grass/flowers population.

28.

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

29.

A forest fire destroys the majority of the trees in a state park. Which effect will this most likely have on secondary consumers in that ecosystem?

a)

The amount of available energy will increase because there will be fewer predators in the forest.

b)

The amount of available energy will increase because there will be less competition from producers.

c)

The amount of available energy will decrease because fewer primary consumers will survive the lack of vegetation.

d)

The amount of available energy will remain constant because secondary consumers are not reliant on primary consumers.

30.

The diagram shows the relationships among organisms living in an Atlantic coast estuary. Use the diagram to answer the following.

Which of these is an abiotic factor that affects the organisms in the estuary ecosystem?

a)

the amount of bacteria in the water

b)

the number of copepods

c)

the amount of salt in the water

d)

the number of scavengers

31.

When a population grows past the ecosystem's carrying capacity, what happens to the population?

a)

Continues to grow

b)

The population starts to die off to return to carrying capcity

c)

The population will go extinct due to lack of resources

d)

The population grows then finds a new carrying capacity

32.

Which process do plants use to turn sunlight into food energy?

a)

photosynthesis

b)

cellular respiration

c)

transpiration

d)

evaporation

33.

Which kind of organism is an autotroph?

a)

consumer

b)

producer

c)

decomposer

d)

herbivore

34.

Which organisms are heterotrophs?

a)

photosynthesizers

b)

producers

c)

consumers

d)

plants

35.

Why are mushrooms important to the food chain?

a)

They recycle nutrients into the ecosystem.

b)

They produce food energy for other living things.

c)

They recycle oxygen into the atmosphere.

d)

They consume excess herbivores in the ecosystem.

36.

Maggots feed on dead and decaying organisms for energy. What are maggots?

a)

autotrophs

b)

producers

c)

decomposers

d)

heterotrophs

37.

Which organism is a primary consumer in the food web below?

a)

herbivorous duck

b)

bald eagle

c)

osprey

d)

vegetation

38.

What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?

a)

The small fish and wading birds would be affected.

b)

Only the small fish would be affected.

c)

The small fish, bivalves, and invertebrates would be affected.

d)

The entire food web would be affected.

39.

The diagram shows a basic food chain.

Which is the primary consumer?

a)

Rabbit

b)

Grass

c)

Snake

d)

Hawk

40.

In an ecosystem, a deer consumes grass. What percentage of energy will the deer acquire from the grass?

a)

0.1%

b)

1%

c)

10%

d)

100%

41.

Yellowfin tuna are large fish that are found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to a food source, such as smaller herbivorous fish that may be searching for food around the structures.

Which trophic level in an energy pyramid do yellowfin tuna fill?

a)

producer

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

42.

Select all the biotic factors from the list.

a)

Water

b)

Turtle

c)

Log Turtles are Sitting On

d)

Grasses

e)

Sun

43.

Which of the following supply energy TO the bear?

a)

Beaver

b)

Parasol Fungus

c)

Swallowtail Caterpillar

d)

Persimmon Tree

100 %

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