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Food chains and Food Webs

Total questions: 85

Worksheet time: 2hrs 27mins

Name
Class
Date
1.

Bacteria, fungi, and worms typically serve what role in an ecosystem?

a)
herbivore
b)
carnivore
c)
omnivore
d)
decomposer
2.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
3.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
4.

Which of these completes the food chain correctly?

a)

a rock

b)

a fox

c)

a plant

d)

an egg

5.

Which of these is a possible food chain for this environment?

a)

Sun → grass → fly → frog

b)

frog → fly → grass → Sun

c)

Sun ← grass ← fly ← frog

d)

Sun → fly → frog → snake

6.
_______are animals that eat only plants.
a)
herbivore
b)
carnivore
c)
omnivore
7.
a _______ shows how each living thing gets food and how nutrients and energy are passed from organism to organism. 
a)
ecosystem
b)
food chain
8.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
9.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
10.

What is the effect of removing prey from a food chain?

a)

All predators above them will die or suffer.

b)

The prey's predator will die or suffer, but everybody else should be fine.

c)

The prey will always, eventually, come back

d)

The predators population will grow

11.

If the mouse population becomes sick and decreases, which statement about the food web will be true?

a)

The grass population will decrease.

b)

The hawk population will increase.

c)

The grass population will increase.

d)

The wildflower population will decrease.

12.

An example of a predator:

a)

shark

b)

mouse

c)

rabbit

13.

An example of prey:

a)

lion

b)

mouse

c)

shark

14.
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
15.
A population of mice lives in a barn community. A cat population has just joined the community. What will happen?
a)
Mouse and cat populations both go up?
b)
Mouse and cat populations both go down
c)
Mouse population goes down as cat population goes up
d)
Mouse population goes up as cat population goes down
16.
Which food chain is in the correct order?
a)
cat, grass, bird, snail
b)
bird, snail, grass, cat
c)
grass, snail, bird, cat
d)
grass, cat, bird, snail
17.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
18.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
19.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
20.

Why might an organism have more than one arrow coming from them in a food web?

a)

More than one organism may eat them.

b)

They may eat more than one other organism.

c)

This organism gets its energy from multiple sources.

21.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
22.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
23.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
24.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
25.
If a frog is the prey, what could be the predator?
a)
Grass
b)
Insect
c)
Snake
d)
Snail
26.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
27.
Which organism has the most energy and which organism has the least amount of energy? Choose the best answer. 
a)
mosquito and grass
b)
mouse and grass
c)
grass and owl
d)
grass and small bird
28.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
29.
What is missing from this food chain?
Grass > Grasshopper > Bird > Snake
a)
Producer
b)
Primary Consumer
c)
Secondary Consumer
d)
Decomposer
30.
Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.
a)
Franivore
b)
Carnivore
c)
Herbivore
d)
Omnivore
31.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
32.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
33.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
34.
a living organism, such as a plant, that makes its own food, using the energy of the Sun, water and carbon dioxide
a)
predator
b)
producer
c)
decomposer
d)
food web
35.
a living organism that gets energy by eating other organisms
a)
herbivore
b)
consumer
c)
producer
d)
food web
36.
an animal that is hunted and eaten by other animals
a)
omnivore
b)
prey
c)
herbivore
d)
predator
37.
an animal that eats other animals
a)
omnivore
b)
herbivore
c)
scavenger
d)
carnivore
38.
the path that food energy travels from one organism to another organism in an ecosystem
a)
energy pyramid
b)
food web
c)
food chain
d)
decomposer
39.
an animal that eats both plants and animals
a)
herbivore
b)
omnivore
c)
carnivore
d)
predator
40.
organism that gets its energy by breaking down dead and decaying matter and waster
a)
scavenger
b)
food chain
c)
herbivore
d)
decomposer
41.
a diagram that shows how much food energy is passed from each level of the food chain to the next
a)
energy pyramid
b)
food chain
c)
decomposer
d)
herbivore
42.
overlapping food chains with different pathways for the flow of food energy in an ecosystem
a)
producer
b)
decompser
c)
food web
d)
food chain
43.
an animal that eats dead organisms
a)
omnivore
b)
carnivore
c)
scavenger
d)
predator
44.
an animal that hunts and eats other animals
a)
herbivore
b)
predator
c)
omnivore
d)
carnivore
45.
an animal that eats only plants or plant products like seeds
a)
predator
b)
omnivore
c)
carnivore
d)
herbivore
46.

All living things need _______ to stay alive.

a)

producers

b)

consumers

c)

energy

d)

prey

47.

Plants are _________.

a)

producers

b)

consumers

c)

decomposers

d)

predators

48.

Energy flows from the ______ to _______.

a)

Sun to consumers

b)

Predator to the prey

c)

Sun to producers

d)

Predator to the Sun

49.

All food chains start with energy from the ______.

a)

prey

b)

predator

c)

producer

d)

Sun

50.

All animals are __________.

a)

consumers

b)

prey

c)

predators

d)

producers

51.

A ______________ is an animal that hunts other animals for food.

a)

prey

b)

predator

c)

producer

d)

consumer

52.

__________ is an animal that is hunted for food by another animal.

a)

producer

b)

Consumer

c)

predator

d)

prey

53.

An ____________ is the relationship of living and non-living things.

a)

producer

b)

consumer

c)

community

d)

ecosystem

54.

A food chain begins with ____________.

a)

consumers

b)

producers

c)

predators

d)

prey

55.

When organisms die, their bodies _________, or break down into simpler parts.

a)

decay

b)

end

c)

do nothing

d)

die

56.

A ____________ is a living thing that breaks down the remains of dead organisms.

a)

producer

b)

consumer

c)

decomposer

d)

prey

57.

All food chains end with ___________________.

a)

producers

b)

consumers

c)

predators

d)

decomposers

58.

An example of decomposers would be ....

a)

bacteria, mushrooms, and earthworms

b)

frogs, algae, and shark

c)

shrimp, crayfish, mushrooms

d)

mushrooms, earthworms, and shrimp

59.

Where do producers get their energy?

a)

plants

b)

consumers

c)

planets

d)

sunlight

60.

How do consumers gain energy?

a)

from Sunlight

b)

by eating producers and other consumers

c)

by go to the store and buying food

d)

by making their own food

61.

Why are decomposers important in an ecosystem?

a)

They can cause sickness

b)

Producers can eat them

c)

They break down dead organisms into simpler materials

d)

They take things out of the soil

62.

How do plants make their own food?

a)

photosynthesis

b)

predators

c)

decomposers

d)

producers

63.

Which of the following would be an example of a prey and predator relationship?

a)

bee and a flower

b)

corn and a pig

c)

rabbit and a fox

d)

berry bush and a deer

64.

Which of the following is an example of a producer?

a)

green plant

b)

cat

c)

tiger

d)

rabbit

65.

If the number of frogs decreases, what would happen to the crickets that the frogs would eat?

a)

The number of crickets would decrease

b)

The number of crickets would increase

c)

The number of crickets would remain the same

d)

The crickets would move away.

66.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
67.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
68.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
69.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
70.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
71.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
72.
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
73.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
74.

In the food web shown, who is the secondary consumer?

a)

grass

b)

mouse

c)

rabbit

d)

fox

75.

Living things in an ecosystem are known as

a)

abiotic

b)

biotic

76.
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.
77.
In this image, the grass is the ______________.
a)
Primary Consumer
b)
Secondary Consumer
c)
Heterotroph
d)
Producer
78.
The primary consumer in this food chain is the ____________.
a)
Frog
b)
Eagle
c)
Grasshopper
d)
Python
79.
Which of the animals in this food web is a secondary consumer?
a)
Hawk
b)
Lizard
c)
Mouse
d)
Snake
80.
The largest part of an ecosystem is always the ________________.
a)
Primary Consumers
b)
Primary Producers
c)
Quarternary Consumers
d)
Secondary Consumers
81.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
82.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
83.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
84.
An animal that is hunted and eaten for food is a 
a)
predator
b)
prey
c)
population
85.
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.

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