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MS-LS2-3 -- Food Chains, Food Webs, & Energy Pyramids

Total questions: 67

Worksheet time: 2hrs 32mins

Name
Class
Date
1.

In this food chain, what will happen if the frogs become extinct?

a)

The snakes will increase.

b)

The grasshoppers will decrease.

c)

The eagles will remain the same.

d)

The grasshoppers will increase.

2.

Several food chains linked together make up a ___.

a)

food web

b)

Punnett Square

c)

karyotype

3.

Look carefully at the image. Which organism is the producer?

a)
Wolf
b)

Tree

c)

lizard

d)

grasshopper

e)

Bird

4.

Look carefully at the image. Which organism is tertiary consumer?

a)
Wolf
b)

bird

c)

lizard

d)

grasshopper

5.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
6.

Which of these organisms would receive energy from the snake?

a)

Plant

b)

Rabbit

c)

Mouse

d)

Hawk

7.
The primary consumer in this food chain is the ____________.
a)
Frog
b)
Eagle
c)
Grasshopper
d)
Python
8.

Use the food web above.

What organism is missing from this food chain?

______ --> Insect --> Vole --> Hawk

a)

Vole

b)

Grass

c)

Insect

d)

Thrush

e)

Slug

9.

Use the food web above.

What organism is missing from this food chain?

Grass --> Rabbit --> ________

a)

Vole

b)

Fox

c)

Insect

d)

Thrush

e)

Frog

10.

Use the food web above.

What organism is missing from this food chain?

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

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

11.

All energy on Earth ultimately comes from what source?

a)

Water

b)

Consumers

c)

Sun

d)

Oxygen

12.

Producer vs. Consumer

Categorize the following

photosynthesis

cellular respiration

plants

animals

Producer
Consumer
13.

Label this food chain

a)sun
b)producer
c)primary consumer
d)secondary consumer
e)decomposer
1
2
3
4
5
1)
2)
3)
4)
5)
14.

Label the food chain

a)decomposer
b)sun
c)producer
d)primary consumer
e)secondary consumer
1
2
3
4
5
1)
2)
3)
4)
5)
15.

Autotroph vs. Heterotroph

Categorize the following

Apple tree

Bean plant

Rabbit

Dog

Corn

Human

Autotroph
Heterotroph
16.

Autotroph vs. Heterotroph

Categorize the following

Flower

Tree

Caterpiller

Butterfly

Grass

Bison

Autotroph
Heterotroph
17.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
18.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
19.
What is the role of decomposers in a food chain?
a)
Use sunlight to make food
b)
Eat other organisms to gain energy
c)
Make the food for the whole food chain
d)
Break down dead organisms and add nutrients to the soil
20.
Which type of consumer eats meat only?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
21.
Molds, bacteria, and worms are ________.
a)
decomposers
b)
producers
c)
consumers
d)
food chains
22.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
23.
If a frog is the prey, what could be the predator?
a)
Grass
b)
Insect
c)
Snake
d)
Snail
24.
Which of the following is a producer?
a)
Maple tree
b)
Sunfish
c)
Bunny
d)
Bear
25.
_________ are animals that eat BOTH plants and animals. 
a)
omnivore
b)
carnivore
c)
herbivore
26.

An ecosystem shows how each living thing gets food and how ________________ and energy are passed from organism to organism.

a)

ecosystem

b)

food chain

c)

nutrients

d)

prey

27.

Choose all of the abiotic factors from the choices.

a)

tree

b)

oxygen

c)

sun

d)

soil

e)

frog

28.

If the snake population decreases, what would most likely happen to the hawk population?

a)

The number of snakes would increase.

b)

The number of hawks would increase.

c)

The number of hawks would decrease.

d)

The number of mice would decrease.

29.

Which of the following is represented in the diagram?

a)

Evaporation of water

b)

Transfer of energy

c)

Reflection of light

d)

Animal life cycle

30.
Question Image

Match the following organisms from the above ecosystem to their trophic level according to the food chain.

a)

Grass

1.

Producer (autotroph)

b)

Grasshopper

2.

Primary Consumer

c)

Bird

3.

Secondary Consumer

d)

Fox

4.

Tertiary Consumer

31.
Question Image

Match the levels with their positions on an Energy Pyramid.

a)

Primary Consumers

1.

Level 2

b)

Tertiary Consumers

2.

Level 4

c)

Producers

3.

Level 1

d)

Secondary Consumers

4.

Level 3

32.

What do the arrows in a food chain represent?

a)

Who has more cells

b)

Disappearing matter

c)

Movement of energy

d)

How hungry an organism is

33.

Scientists develop models of ecosystems to create a simplified representation that helps in understanding complex interactions. The word "models" in this sentence is similar in meaning to…

a)

complex equations

b)

detailed observations

c)

representations

d)

lab experiments

34.

To fully understand the cycling of matter, scientists need to describe how different elements move through an ecosystem. The word "describe" in this sentence is similar in meaning to…

a)

measure precisely

b)

formulate a hypothesis

c)

explain or recount

d)

test methodically

35.

Matter, the physical substance of an organism, is constantly being rearranged and moved within an ecosystem. The word "matter" in this sentence is similar in meaning to…

a)

radiant energy

b)

environmental conditions

c)

physical material

d)

biological processes

36.

The cycling of nutrients in a forest ecosystem involves the repetitive movement of essential elements through the soil, plants, and animals. The word "cycling" in this sentence is similar in meaning to…

a)

one-way progression

b)

gradual accumulation

c)

recurring passage

d)

continuous depletion

37.

The flow of energy from the sun to producers and then to consumers represents the movement of energy through different trophic levels. The word "flow" in this sentence is similar in meaning to…

a)

static storage

b)

equal distribution

c)

directional movement

d)

complete conversion

38.

What is the role of mold?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

39.

What is the role of algae?

a)

A. Producer

b)

B. Consumer

c)

C. Decomposer

d)

D. Prey

40.

What is the role of sunflowers?

a)

A. producer

b)

B. consumer

c)

C. decomposer

d)

D. prey

41.
All food webs and food chains begin with _________________.
a)
primary consumer
b)
producers
c)
secondary consumers
d)
predators
42.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
43.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
44.

Which of these is a producer?

a)

Insects

b)

Grass

c)

Bacteria

d)

Eagle

45.

What type of organism is at the beginning of every food chain?

a)

predator

b)

carnivore

c)

producer

d)

herbivore

46.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
47.
What is another name for producer?
a)
consumer
b)
herbivore
c)
autotroph
d)
lichen
48.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
49.
How do producers obtain energy?
a)
They conduct photosynthesis.
b)
They consume plants.
c)
They consume primary consumers.
d)
They consume secondary consumers.
50.

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

51.

Look at the diagram.

Which shows one way that energy flows to the hawk in this food web?

a)

Plants → Rabbit → Hawk

b)

Plants → Mouse → Lizard

c)

Hawk → Mouse → Plants

d)

Plants → Mouse → Rabbit

52.
From where do autotrophs obtain their energy?
a)
The sun
b)
Other organisms
53.
What is another name to describe an autotroph?
a)
Consumer
b)
Producer
54.
How can animals and fungi best be classified?
a)
Autotroph
b)
Heterotroph
55.
Which type of organisms are typically plants?
a)
Autotrophs
b)
Heterotrophs
56.

Matter...

a)

can be destroyed.

b)

can not be destroyed.

57.

Choose the decomposer.

a)

grass

b)

elephant

c)

bacteria

d)

bird

58.

At which level of the Pyramid are producers located?

a)

A

b)

B

c)

C

d)

D

59.

If the producer starts off with 250,000 kcal, how many calories will the secondary consumer have?

a)

250,000 kcal

b)

250 kcal

c)

25,000 kcal

d)

2,500 kcal

60.

Which statement is true about the law of conservation of energy?

a)

Energy is created at the power plant and used by humans, then is just gone.

b)

Water is cycled and used over and over, but energy is gone once we use it.

c)

Carbon is taken in by humans and given off to plants and plants take in oxygen and then give it to humans.

d)

Energy can not be created nor destroyed, but instead changes places or forms and is replenished through the different cycles on Earth.

61.

What is the Law of Conservation of matter?

a)

Matter is created in a chemical reaction

b)

Matter is created in a physical change

c)

New chemicals formed from a chemical reaction have a larger overall matter than the original reactants

d)

Matter is never created or destroyed

62.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
63.

If the mass of a chemical reaction's product is 15 grams, what would the mass of the reactants be?

a)

20 g

b)

15 g

c)

10 g

d)

3 g

64.

Which picture below would correctly demonstrate the Law of Conservation of Matter if this picture is the reactants?

a)

b)

c)

65.
Question Image

Label each energy level of the pyramid to its level of organisms.​ ​

a)

1000 Kcal

1.

producers

b)

100 Kcal

2.

primary consumers

c)

10 Kcal

3.

secondary consumers

d)

1 Kcal

4.

tertiary consumers

66.

Which spot represents a primary consumer ?

A
B
C
D
67.
Question Image

If the Tertiary Consumers ended up with 5 units of energy, how much energy did each of the other trophic levels have?

a)

Producers

1.

5000 units

b)

Primary Consumers

2.

500 units

c)

Secondary Consumers

3.

50 units

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