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Ecosystems and Energy Flow

Total questions: 50

Worksheet time: 47mins

Name
Class
Date
1.

In an ecosystem, snakes feed on frogs, which feed on mosquitoes. Use of a bug spray has decreased the number of mosquitoes. What will probably happen to the number of frogs and snakes?

a)

Frogs will increase, snakes will increase

b)

Frogs will increase, snakes will decrease

c)

Frogs will decrease, snakes will increase

d)

Frogs will decrease, snakes will decrease

2.

Which of these shows a possible food chain for an ecosystem?

a)

shark--> fish --> plankton -->sun

b)

sun --> plankton --> fish --> shark

c)

plankton --> sun --> fish --> shark

d)

plankton --> fish --> shark --> sun

3.

If the snake population decreased, which group would increase in number?

a)

Producers

b)

Primary consumers

c)

Secondary consumers

d)

Tertiary consumers

e)

Decomposers

4.

A raccoon eats plants and animals. It is an example of a(n)

a)

omnivore

b)

carnivore

c)

herbivore

d)

decomposer

5.

What do producers need, other than sun, for photosynthesis?

a)

Water and CO2

b)

Glucose and O2

c)

Love and happiness

d)

Carbohydrates and water

6.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

7.

Organisms that obtain energy by feeding on other organisms

a)

Producer

b)

Consumer

c)

Decomposer

8.

Organisms that break down wastes and dead organisms and return the raw materials to the environment

a)

Producer

b)

Consumer

c)

Decomposer

9.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

10.

Consumers that eat only animals

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

11.

Consumers that eat both plants and animals

a)

Omnivores

b)

Carnivores

c)

Herbivores

d)

Scavengers

12.

A food _______ is a series of events in which one organism eats another and obtains energy.

a)

chain

b)

web

c)

pyramid

d)

plate

13.

A food _______ consists of many overlapping food ________.

a)

web, chains

b)

chain, webs

c)

pyramid, webs

d)

web, pyramids

14.

As you work your way up the energy pyramid, what happens to the energy?

a)

It increases

b)

It decreases

c)

It stays the same

d)

Nothing

15.

In the food web above, what eats the rabbit?

a)

Fox

b)

Hawk

c)

Vole

d)

Grass

16.

In the food web above, what organism is missing from this food chain:

Grass --> Slug --> ________ --> Hawk

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

17.

In the energy pyramid, what is the bottom level composed of?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

18.

In the energy pyramid, what comes after the producers?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

19.
A diagram  that shows how much energy is available at each feeding level in an ecosystem is a(n)
a)
food chain
b)
food web
c)
water cycle
d)
energy pyramid
20.
Producers capture energy from
a)
sunlight
b)
food
c)
plants
d)
sugar
21.
Consumers obtain energy by
a)
eating other organisms
b)
eating plants
c)
photosynthesis
d)
nitrogen
22.
Where is the most energy available on a Energy Pyramid?
a)
Producer Level
b)
First Level Consumers
c)
Second Level  Consumers
d)
Third Level Consumers
23.

An autotroph can also be called a

a)

animal.

b)

consumer.

c)

heterotroph.

d)

producer.

24.

Consumers breakdown the macromolecules of the organisms they have eaten to release ATP in a process called

a)

photosynthesis.

b)

chemosynthesis.

c)

cellular respiration.

d)

ATP liberation.

25.

The levels of nourishment in a food chain are called

a)

pyramids of numbers.

b)

trophic levels.

c)

food phases.

d)

biomagnitudes.

26.

Because energy flows from organism to organism and is used for metabolism or is converted to heat the next organism in the chain only receives 10% of the energy from the previous level. This is known as the

a)

Heat Regulation.

b)

Energy Loss Directive.

c)

Heat Transfer Rule.

d)

Rule of 10.

27.

In the picture, which organism is the primary consumer?

a)

plant

b)

snake

c)

mouse

d)

bird

28.

In this food web, which of the following organisms eats the largest variety of different producers?

a)

Mouse

b)

Grasshopper

c)

Dragonfly

d)

Butterfly

29.
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.
30.

How much energy is available to be passed on to the next level in a food web?

a)

100%

b)

10%

c)

50%

d)

75%

31.

Any organisms that makes its own food

a)

autotroph

b)

heterotroph

c)

herbivore

32.

Organism that must get its energy from other organisms

a)

autotroph

b)

heterotroph

c)

omnivore

33.

A system comprising all the biotic and abiotic factors in an area and all the interactions among them

a)

Ecosystem

b)

Environment

c)

Tundra

d)

Environmental Interactions

34.

What is an ecosystem?

a)

The area of land where animals live

b)

A community of insects that work together

c)

A community of organisms together with its environment

d)

The section of a terrarium where plants grow

35.
What do you call ALL the living things in the same environment?
a)
population
b)
community
c)
ecosystem
d)
biome
36.
What do you call all of the living things AND all of the non-living things together in the same environment?
a)
Population
b)
Community
c)
Ecosystem
d)
Biome
37.
What do you call ONE species all living in the same environment?
a)
Population
b)
Community
c)
Ecosystem
d)
Biome
38.
A particular forest contains snakes, lizards, hawks, squirrels, bears, oak trees, and several types of plants and mushrooms.  Together these organisms make up the forest's _____________.
a)
Community
b)
Ecosystem
c)
Habitat
d)
Population
39.
Which word describes the relationships (or interactions) between living and nonliving things?
a)
ecosystem
b)
population
c)
community
d)
habitat
40.
Any living thing is the definition for what vocabulary word?
a)
Organism
b)
Population 
c)
Limiting factor
d)
Communtiy
41.
A squirrel lives in a hollow nook of a pine tree. How would you describe the squirrel's shelter?
a)
An abiotic factor in its habitat
b)
A biotic factor in its ecosystem 
c)
A member of its population 
d)
A nonliving object the squirrel needs
42.
In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?
a)
There would be an overpopulation of arctic hares and lemmings.
b)
Polar bears would move to a new ecosystem.
c)
The ecosystem would collapse, because it lost its main producer.
d)
Wildflowers would die out from the ecosystem.
43.
Temperature, light, air, water, and soil are all  _____  parts of the environment
a)
alive
b)
biotic 
c)
abiotic
d)
living
44.

Non-living things

a)

Biotic

b)

Abiotic

45.

Examples of Abiotic things

a)

plants, animals fungi

b)

light, water, soil

46.

A place where an organism lives

a)

Biome

b)

Habitat

c)

Ecosystem

47.

All organisms in a community

a)

Niche

b)

Community

c)

Population

48.

All populations living in an area

a)

Community

b)

Population

c)

Niche

49.

The role of organisms in a community

a)

Population

b)

Ecosystem

c)

Niche

50.
The picture shows a sea turtle finding shelter under sand. What kind of interaction is this?
a)
Biotic/Biotic interaction
b)
Biotic/Abiotic interaction

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