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Ecosystems, Population, and Energy Storage

Total questions: 88

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

A population of panthers lives in the southeastern United States. Over 50 years, the size of the panther population in the region increased. What best explains the increase in the size of the panther population?

a)

The panther population is always increasing because no animal eats panthers.

b)

Fewer panthers were born than died.

c)

More panthers were born than died.

d)

A lot of panthers were born and none of them died.

2.

What do birds such as eagles and hawks need energy for?

a)

flying

b)

breathing

c)

digesting food

d)

all of the above

3.

In a rainforest, anteaters eat ants, and ants eat aphids (a type of very small insect). The sizes of the populations have been stable for the last 10 years, but recently the size of the aphid population decreased. What will likely happen to the anteater population?

a)

stay the same. Anteaters do not eat aphids, so the number of births and deaths in the anteater population will stay the same.

b)

decrease. Fewer energy storage molecules will be available to the anteater population from the smaller ant population, so the anteater population will reproduce less. This will lead to fewer births than deaths in the anteater population.

c)

decrease. A decrease in the size of any population leads to a decrease in the sizes of all other populations in an ecosystem.

d)

increase. The smaller aphid population will leave more energy storage molecules available in the ecosystem for the anteater population, so there will be more births in the anteater population.

4.

A population of deer lives in Canada. Over 50 years, the size of the deer population decreased. What best explains the decrease in the size of the deer population?

a)

A lot of deer died and no deer were born.

b)

Fewer deer were born than died.

c)

The deer population is always decreasing because deer are always being eaten.

d)

More deer were born than died.

5.

Scientists have been studying the size of three populations in a grassland. In this ecosystem, hawks (a type of large bird) eat sparrows (a type of small bird), and sparrows eat seeds from buckwheat. The data showed that all three populations were stable. Then the hawk population increased suddenly. What will likely happen to the size of the sparrow population as a result?

a)

stay the same. The size of their resource population did not change, so the amount of energy storage molecules available for the sparrows did not change. There will be the same number of births and deaths in the sparrow population.

b)

decrease. The larger hawk population will leave fewer energy storage molecules available for the sparrows, so the sparrow population will reproduce less. This will lead to fewer births in the sparrow population.

c)

decrease. The larger hawk population will need more energy storage molecules, so they will eat more sparrows. This will leads to more deaths than births in the sparrow population.

d)

increase. An increase in any population leads to an increase in the sizes of all other populations in the ecosystem.

6.

What do mammals like tigers and zebras need energy for?

a)

running

b)

breathing

c)

digesting food

d)

all of the above

7.

Two organisms fighting for the same resources is known as:

a)

predation

b)

competition

c)

symbiosis

d)

dancing

8.

Energy storage molecules are:

a)

molecules required only for the birth rate

b)

potatoes

c)

a molecule organisms use to stabilize a population

d)

a molecule that organisms can use to release the energy needed to survive

9.

A scientist who studies ecosystems is known as:

a)

chemist

b)

biologist

c)

ecologist

d)

zoologist

10.

A resource population is:

a)

a population that is avoided by organisms

b)

a population that is eaten by organisms from another population

c)

a population that is traded between organisms

d)

a flea

11.

The graph shows that the honeybee population was stable and then decreased. Which statement describes births and deaths when the honeybee population was stable?

a)

There was the same amount of births and deaths.

b)

There were more births than deaths.

c)

There were fewer births than deaths.

d)

There were no deaths.

12.

Which statement describes births and deaths when the population was decreasing?

a)

There was the same amount of births and deaths.

b)

There were more births than deaths.

c)

There were fewer births than deaths.

d)

There were no deaths.

13.

The diagram above is called a food web. It shows the relationship between foxes and voles. What does the food web show?

a)

foxes eat voles

b)

voles eat foxes

c)

voles compete with foxes

d)

foxes compete with voles

14.

A population of Tule Elk lives in Bakersfield. Over 150 years, the size of the Tule Elk population decreased. What best explains the decreased in the size of the Tule Elk population?

a)

A lot of Tule Elk were born and none of them died.

b)

The Tule Elk population is always increasing because no animal eats Tule Elk.

c)

Fewer Tule Elk were born than died.

d)

More Tule Elk were born than died

15.

When a populations is known to be STABLE, it:

a)

there are more deaths

b)

stays mostly the same, over time

c)

there are more births

d)

horses live there

16.

Energy storage molecules are:

a)

molecules required only for the birth rate

b)

potatoes

c)

a molecule organisms use to stabilize a population

d)

a molecule that organisms can use to release the energy needed to survive

17.

What do you think would happen to the lion population if the hyena population increases in size? Assume that the populations were stable before this change.

a)

The lion population would increase.

b)

The lion population would not change.

c)

The lion population would decrease.

d)

The hyena population would increase.

18.

A ________________________________ is all the living and non-living things interacting in a particular area.

a)

Populations

b)

Sample

c)

Ecosystem

d)

Organism

19.

In the Arctic Ocean, sharks eat whales, and whales eat crabs. In the last 10 years, the sizes of the populations have been stable, but recently the size of the crab population increased. What will likely happen to the shark population?


The size of the shark population will . . .

a)

decrease. The larger crab population will leave fewer energy storage molecules available in the ecosystem for the shark population, so there would be fewer births in the shark population.

b)

stay the same. Sharks do not eat crabs, so the number of births and deaths in the shark population will stay the same.

c)

increase. More energy storage molecules will be available to the shark population from the larger whale population, so the shark population will reproduce more. This will lead to more births than deaths in the shark population.

d)

increase. An increase in the size of any population leads to an increase in the sizes of all other populations in an ecosystem.

20.

Glucose is an example of ....?

a)

A molecule

b)

An atom

c)

Never heard of that word

d)

An energy storage molecule

21.

When something remains mostly the same over time it is said to have....?

a)

Uneventful

b)

Potential Energy

c)

Stability

d)

Boring

22.

The process of creating offspring is called....?

a)

Sample

b)

Resource Population

c)

Reproduction

d)

Ecosystem

23.

Living things such as plants, animals and bacteria are.....?

a)

Populations

b)

Organisms

c)

Ecosystems

d)

Resource Populations

24.

A small part that is meant to show what the whole is like...?

a)

A piece of something

b)

A fraction

c)

A sample

d)

Competition

25.

An example of stability would be.....?

a)

An increase of births and a decrease of deaths

b)

An increase of deaths and a decrease of births

c)

Both births and deaths are equal

d)

Both births and deaths are unequal

26.

A population of tigers lives in Bangladesh. Over 30 years, the size of the tiger population increased. What best explains the increase in size of the tiger population?

a)

A lot of tigers were born and none of them died

b)

The tiger population is always increasing because no animal eats tigers

c)

Fewer tigers were born than died

d)

More tigers were born than died

27.

A population of mice lives in the northeastern United States. Over the past 40 years, the size of the mouse population decreased. What best explains the decrease in the size of the mouse population?

a)

Fewer mice were born than died

b)

A lot of mice died and no new mice were born

c)

More mice were born than died

d)

The mouse populations is always decreasing because mice are always being eaten

28.

In the Arctic region, polar bears eat seals, and seals eat cod(fish). The past 5 years the sizes of all populations were stable, but recently the size of the polar bear population decreased. What will probably happen to the cod(fish) population?

a)

Increase

b)

Stay the same

c)

Decrease

d)

Not sure

29.

A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. This is an example of .......?

a)

An ecosystem

b)

A food web

c)

Consumer population

d)

Transfer of food energy

30.

Which jelly fish sampling method will give you a estimate of a population over time?

a)

The dip net method

b)

The trawling method once a month

c)

Neither method

d)

Both methods

31.

Which jelly fish sampling method will give you a look at the organism instead of a look at the population?

a)

The trawling method

b)

The net dipping method

c)

Neither method

d)

Scanning method

32.

In an experiment where 2 groups of crickets were given different amounts of sugar in their food. Sugar is a type of energy storage molecule. Group A was given more sugar than Group B,which was given less sugar. Which group reproduced more?

a)

Group A reproduced more

b)

Group B reproduced more

c)

Neither Group A or Group B reproduced

d)

Both Group A and Group B reproduced the same

33.

The sockeye salmon require a lot of energy during reproduction due to.....?

a)

Jumping 12 feet over water falls to get to their laying grounds

b)

Digging 4 or 5 gravel nests at the bottom of the stream to lay their eggs

c)

Females fighting other females to get the best nesting spots

d)

Laying 1,200 eggs in each nest

34.

An example of a population is

a)

all trees in a forest

b)

all maple trees in a forest

c)

all plants in a forest

d)

all animals in a forest

35.

A group of different species that live together and interact in an environment are called a/an ________.

a)

community

b)

habitat

c)

population

d)

ecosystem

36.

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

a)

Squirrel Population

b)

Sunlight

c)

Grass available

d)

Fungi growth

e)

foxes

37.
How does energy enter an ecosystem? 
a)
sunlight
b)
soil 
c)
animals 
d)
invasive species 
38.
Deserts, mountains, and rivers are all examples of ________.
a)
vacation spots
b)
tundra
c)
ecosystems
d)
wetlands
39.
An organism that gets food by eating other organisms? 
a)
producer 
b)
consumer
c)
herbivore 
d)
decomposer 
40.
What are producers? 
a)
organisms that store extra food 
b)
organisms that make their own food
c)
breaks down dead organisms 
d)
decomposes nutrients 
41.
Which animals are examples of consumers? 
a)
hawks and plants 
b)
lion and hawks
c)
plankton
d)
algae and fish 
42.
What is an organism that breaks down dead organisms and wastes to live and grown? 
a)
herbivore
b)
consumer
c)
producer 
d)
decomposer
43.
What is an ecosystem? 
a)
producing food from sunlight
b)
animals that live in certain areas
c)
living and nonliving things that interact in an area
d)
a person who studies an environment
44.
Most ecosystems have many food chains. What are food chains that overlap in an ecosystem and show feeding relationships? 
a)
unhealthy
b)
energy pyramid 
c)
food web
d)
matter
45.
Consumers that eat both plants and animals are?
a)
herbivores
b)
carnivores
c)
omnivores
d)
decomposer
46.
All the members of one species that live within an area of an ecosystem is a?
a)
population
b)
community
c)
niche
47.
Which of the following is NOT a consumer?
a)
grass
b)
dog
c)
shark
d)
fish
48.
An organism that gets energy from eating other organisms is a ______________.
a)
producer
b)
consumer
c)
decomposer
d)
prey
49.

Moon Jelly populations are decreasing. Why?

a)

There are more births than deaths

b)

There are less births than deaths

c)

The population is stable

50.

What do organisms use energy for?

a)

Digesting food

b)

Reproduction

c)

Moving around

d)

Everything they do to survive

51.

The Human population is increasing worldwide. What does that mean?

a)

More births than deaths

b)

Less births than deaths

c)

A lot of births and NO deaths

d)

There is an equal number of births and deaths

52.

A resource population is:

a)

a population that is avoided by organisms

b)

a population that is eaten by organisms from another population

c)

a population that is traded between organisms

d)

a flea

53.
If there is more food than usual in an ecosystem, then the population will mostly likely...
a)
stay the same
b)
decrease
c)
increase
d)
reach carrying capacity
54.
A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.
a)
Population
b)
Community
c)
Habitat
d)
Ecosystem
55.
Organisms that can capture energy from inorganic, nonliving sources.
a)
Producers
b)
Consumers
c)
Detritivores
d)
Carnivores
56.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
57.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

58.

Consumers that eat both plants and animals

a)

Omnivores

b)

Carnivores

c)

Herbivores

d)

Scavengers

59.

Consumers that feed on the bodies of dead organisms

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

60.

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

a)

chain

b)

web

c)

pyramid

d)

plate

61.

A food _______ consists of many overlapping food ________.

a)

web, chains

b)

chain, webs

c)

pyramid, webs

d)

web, pyramids

62.

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

63.

In the food web above, what eats the rabbit?

a)

Fox

b)

Hawk

c)

Vole

d)

Grass

64.

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

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

a)

Vole

b)

Frog

c)

Insect

d)

Thrush

65.

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

66.

In the energy pyramid, what comes after the producers?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

67.
What is the energy molecule?
a)
DNA
b)
ATP
c)
RNA
d)
AAA
68.
The purpose of cellular respiration is to produce ?
a)
energy
b)
oxygen
c)
sugar
d)
protein
69.
What is the energy organelle?
a)
nucleus
b)
mitochondria
c)
ribosomes
d)
lysosomes
70.
To get the most ATP molecules for energy in cellular respiration, you have to have lots of ?
a)
hydrogen
b)
oxygen
c)
carbon dioxide
d)
water
71.
The waste gas given off by cellular respiration is?
a)
oxygen
b)
carbon dioxide
c)
nitrogen
d)
methane
72.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Cell Membrane

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

73.

Select all that are products of Photosynthesis.

a)

Water

b)

Carbon Dioxide

c)

Oxygen

d)

Sunlight (Light Energy)

e)

Glucose (Sugar/food)

74.
Why do plants conduct photosynthesis?
a)
To make light
b)
To make mitochondria
c)
To make glucose
d)
To release carbon dioxide
75.
Which choice correctly shows the gases that enter and exit plants during photosynthesis?
a)
Enter: Oxygen
Exit: Carbon dioxide
b)
Enter: Water vapor
Exit: Glucose
c)
Enter: Carbon dioxide
Exit: Oxygen
d)
Enter: Light
Exit: Water vapor
76.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

light + carbon dioxide + water --> glucose + oxygen

b)

carbon dioxide + sugar + water --> oxygen + light

c)

oxygen + light + water --> carbon dioxide + sugar

d)

carbon dioxide + oxygen + water --> Light+ Sugar

77.
What gas  do plants give off after conducting photosynthesis that humans/animals need in order to live?
a)
Oxygen
b)
Carbon
c)
Nitrogen
d)
Hydrogen
78.
Plants take in ________from the air as one key ingredient for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
79.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
80.
Why are producers (plants) important for all life on Earth? 
a)
They make our world more beautiful
b)
They make the planet look green
c)
They use carbon dioxide and give us oxygen
d)
They provide shade for insects
81.
Why are producers (plants) important for all life on Earth? 
a)
They make our world more beautiful
b)
They make the planet look green
c)
They use carbon dioxide and give us oxygen
d)
They provide shade for insects
82.
__________ energy from the sun is changed intto __________ energy during photosynthesis
a)
Chemical energy to light energy
b)
Light energy to chemical energy
c)
Thermal energy to light energy
d)
Electrical energy to chemical enerfy
83.
What are the 3 key ingredients needed for photosynthesis
a)
glucose, oxygen, carbon dioxide
b)
carbon dioxide, water, glucose
c)
water, soil, sunlight
d)
sunlight, water, carbon dioxide
84.
Which of the following statement is true regarding photosynthesis
a)
creates oxygen for animals to breath
b)
creates energy for consumers to use
c)
creates food for plants to use
d)
all of these are correct
85.
A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.
a)
oxygen
b)
carbon dioxide
c)
ATP
d)
glucose
86.
What is the name of the sugars a plant produces after photosynthesis
a)
Glucose
b)
Sugar
c)
ATP
d)
Oxygen
87.
Which of the following is not needed as a key ingredient for photosynthesis to occur?
a)
sunlight
b)
carbon dioxide
c)
water
d)
oxygen
88.
Why do producers need humans?
a)
Producers use the oxygen humans make
b)
Producers need someone to water them
c)
Producers use the carbon dioxide humans make and turn it into oxygen
d)
Producers use the glucose humans give them

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