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Trophic levels and transfer of energy

Total questions: 80

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

According to the image, what is the producer?

a)

plant

b)

insect

c)

mouse

d)

snake

2.
The efficiency of energy transfer from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
3.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
4.
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.
5.
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.
6.

If the amount of food or resources available increases, the carrying capacity for an animal.....

a)

Stays the same

b)

Increases

c)

Decreases

d)

Fluctuates

7.

This is the largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population crash

c)

lag phase

d)

mutualism

8.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
9.

If the hawk population decreases, what will happen to the snakes and rabbits?

a)

Snakes and rabbits will increase

b)

Snakes and rabbits will decrease

c)

Snakes will decrease, rabbits will increase

d)

Snakes will increase, rabbits will decrease

10.

Match the following

a)

Producers

1.

Plants

b)

1 consumer

2.

Rabbit

c)

2nd Consumer

3.

Snake

d)

Tertiary consumer

4.

Hawk

11.
How will competition affect the carrying capacity of an ecosystem for the animal in competition?
a)
Decrease
b)
Increase
c)
Will show not affect
d)
Competition does not exist in nature
12.

Which scenario would affect the MOST organisms?

a)

All producers die.

b)

All primary consumers die.

c)

All secondary consumers die.

d)

All apex predators die.

13.
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.
14.
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
15.

In the food web shown, the snail would be considered...

En la red alimentaria que se muestra, el caracol se consideraría...

a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
16.

Which best describes the trophic level of an organism?

a)

number of calories it consumes

b)

amount of energy it produces

c)

its life cycle from birth to death

d)

its position in a food chain

17.
An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
18.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
19.
What level consumer could you consider the deer?  
a)
Primary
b)
Secondary
c)
Tertiary
d)
Quarternary
20.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

21.
This diagram shows the amount of energy that moves from one feeding level to another in a food web.
a)
Energy Pyramid
b)
Food Web
c)
Ecosystem
d)
Food Chain
22.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
23.
If these organisms were arranged in a food pyramid, which organism would have the least amount of total energy available?
a)
coyote
b)
insect
c)
lizard
d)
shrub
24.

This diagram shows how energy flows through an eco-system. What is the first source of energy in this pyramid?

a)

sharks and large birds

b)

algae, plankton and seagrass

c)

herbivorous fish, crustaceans and sea urchins

d)

seals and carnivorous fish

25.
A secondary consumer 
a)
eats primary consumers
b)
eats producers
c)
eats plants
26.

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

27.

If there is 1000 Kcal available at the producers level, how much energy is available in the primary consumers level?

a)

100 Kcal

b)

10 Kcal

c)

1 Kcal

d)

1000 Kcal

28.

If the producer has 20,000 kJ of energy, how much energy should the secondary consumer have?

a)

2,000 kJ

b)

500 kJ

c)

200 kJ

d)

1,000 kJ

29.

Which of the following animals is a primary consumer?

a)

Cow

b)

Wolf

c)

Eagle

d)

Whale

30.

In a marine food chain, small fish eat plankton, big fish eat small fish, and sharks eat big fish. Which organism has the smallest population?

a)

The plankton

b)

The small fish

c)

The big fish

d)

The sharks

31.

How might a lack of sunlight disrupt the food web

a)

It would cause consumers to consume less

b)

It would prevent decomposers from decomposing matter

c)

It would prevent producers from producing nutrients.

d)

It would not disrupt the food web at all.

32.
a system of food chains that shows the transfer of energy  is termed
a)
food web
b)
food chain
c)
prey
d)
predator
33.

Fungi, bacteria and worms can all break down organic material, what is the correct name for these type of organisms.

a)

Producers

b)

Consumers

c)

Predators

d)

Decomposers

34.

Apex (top) predator.

a)

Primary Consumer

b)

Secondary Consumer

c)

Tertiary Consumer

d)

Producer

35.

Has to go find food also called Heterotroph.

a)

Consumer

b)

Producer

c)

Apex Predator

d)

Scavenger

36.

What is an Abiotic Factor?

a)

A NON-living factor that can affect an ecosystem

b)

A living factor that can affect an ecosystem

c)

The carrying capacity of an ecosystem

37.

What is a Biotic Factor?

a)

The carrying capacity of an ecosystem

b)

A NON-living factor that can affect an ecosystem

c)

A living factor that can affect an ecosystem

38.

Check all of the boxes that show examples of biotic factors.

a)

Rain

b)

Humans hunting

c)

Predators

d)

Wildfire

39.

Check all of the boxes that are examples of abiotic factors.

a)

Prey

b)

Rainfall

c)

A pack of wolves

d)

A tornado

40.

What is a limiting factor?

a)

Factors that always increase a population

b)

Factors that always decrease a population

c)

Resources that are unlimited

d)

Factors/resources that limit how many organisms can live in an area at the same time

41.

If there was a wildfire in the forest that destroyed the plant life, what would happen to the herbivore population?

a)

Herbivores would decrease due to a lack of food

b)

Herbivores would increase due to an increase of food

c)

Herbivores would not be affected

d)

Herbivores would decrease due to an increase in predators

42.

If humans were to release a pack of wolves into the forest, what type of factor would this be?

a)

Abiotic

b)

Biotic

43.

What does the carrying capacity of a population show?

a)

How many organisms live in the ecosystem

b)

The maximum number of organisms that an ecosystem can support for a long period of time

c)

The minimum number of organisms that can live in an area

d)

The types of organisms living somewhere

44.

What is a population?

a)

All the organisms living in an area

b)

The living and non-living organisms in an area

c)

A group of the same species living in an area

45.

Can a population go over its carrying capacity?

a)

Yes

b)

No

c)

Maybe

46.

What happens if a population goes over its carrying capacity?

a)

It will continue to grow

b)

It will eventually decrease due to a lack of resources

c)

It will die immediately

d)

It will get unlimited resources

47.

Choose the 4 limiting factors.

a)

Food

b)

Water

c)

Time

d)

Space

e)

Shelter

48.

What is the overall trend of this population graph?

a)

Increasing

b)

Decreasing

c)

Constant

d)

No trend

49.

What do limiting factors do?

a)

Separate biotic factors from abiotic factors.

b)

Determine which is the predator and which is the prey.

c)

Regulate how many organisms live in an ecosystem.

d)

Determine which natural disasters will hit an area.

50.

Which of the following are abiotic limiting factors?

a)

The decomposers in an ecosystem.

b)

The populations of producers in a given habitat.

c)

Carrying capacities of several species.

d)

Water, space, and oxygen.

51.

The size of the population of a species in an ecosystem is determined by the ​ (a)   factors available to them.

Choose from the below words
biotic and abiotic
writing and drawing
chemistry
blanket and pillow
52.

What happens to the rabbit population on year 4?

a)

It begins to decrease

b)

It stays the same

c)

It increases

d)

It reaches carrying capacity

53.

What is the carrying capacity of the beetle population?

a)

3

b)

5

c)

7

d)

9

54.

During which day did this population reach carrying capacity?

a)

Day 2

b)

Day 11

c)

Day 23

d)

Day 35

55.

An educated guess is a __________.

a)

hypothesis

b)

procedure

56.

Which statement best describes the predator-prey relationship displayed on this graph?

a)

There is no relationship between the predator and prey.

b)

When the prey population increases, the predator population decreases.

c)

When the prey population increases, the predator population increases.

d)

when the predator population increases, the prey population increases.

57.

Something that regulates the size of a population is called...

a)

a limiting measure

b)

a limiting factor

c)

carrying capacity

d)

biodiversity

58.

What is the carrying capacity of the graph?

a)

1000

b)

8000

c)

800

d)

600

59.

What is the carrying capacity of the graph?

a)

around 500

b)

more than 800

c)

less than 300

d)

around 700

60.

This is the largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population crash

c)

lag phase

d)

mutualism

61.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
62.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

63.

"Organisms that have moved to a location that does not naturally support them."

a)

Invasive species

b)

Destructive species

c)

Unwelcomed species

d)

Infected species

64.

Click on the TERTIARY CONSUMERS in this food web.

HINT: Don't pick the hawk! It is only a secondary or quaternary (4th) consumer.

A
B
C
D
E
F
G
H
I
J
65.

Label the Energy Pyramid to the right with the different trophic levels.

a)

Secondary Consumers

b)

Producers

c)

Primary Consumers

d)

Top Carnivore

1
2
3
4
1)
2)
3)
4)
66.
A team of ecologists observed feeding patterns of several populations in the desert. The energy pyramid shown below depicts the feeding patterns the ecologist observed. Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?
a)
There is less energy available in the producers because their tissues are less dense than those at higher trophic levels.
b)
There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels. 
c)
There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have. 
d)
There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels.
67.
A diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?
a)
Hawk
b)
Rabbit
c)
Grasshopper
d)
Mouse
68.
The process of plants using energy from the sun to create the first trophic level is called?
a)
Photosynthesis
b)
Chemosynthesis
c)
Cellular Respiratation
d)
Primary Producers
69.

Why are producers found at the base of the pyramid?

a)

They create all of the energy and therefore have the most energy of all of the trophic levels

b)

There are more plants than animals.

c)

They begin the flow of energy in an ecosystem.

d)

All of these answers are correct.

70.

What makes an energy pyramid different than a food web or chain?

a)

It shows energy flowing from the top of the chain and downward.

b)

The tropic levels are the opposite

c)

It shows the amount of energy in each trophic level

d)

It shows specific predator/prey relationships

71.

Which kind of organism is an autotroph?

a)

consumer

b)

producer

c)

decomposer

d)

herbivore

72.

Which organisms are heterotrophs?

a)

photosynthesizers

b)

producers

c)

consumers

d)

plants

73.

Which organism is an example of a producer?

a)

moth

b)

mushroom

c)

rose bush

d)

cheetah

74.

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.

75.

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

a)

autotrophs

b)

producers

c)

decomposers

d)

heterotrophs

76.

Yellowfin tuna, or Thunnus albacores, are large sport 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 foraging for food around the structures. Which trophic level does yellowfin tuna fill in a food chain?

a)

producer

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

77.

From the producer level to which level does energy flow directly?

a)

decomposer

b)

tertiary consumer

c)

secondary consumer

d)

primary consumer

78.

An organism that consumes both animals and plants

a)

Carnivore

b)

Herbivore

c)

Omnivore

d)

Frugivore

79.

Anything that has volume and mass

a)

Biomass

b)

Energy

c)

Matter

d)

Trophic Pyramid

80.

An organism that must consume other organisms for nutrients

a)

Producer

b)

Consumer

c)

Autotroph

d)

Cannibal

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