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Ecology

Total questions: 140

Worksheet time: 3hrs 52mins

Name
Class
Date
1.

Any living thing in the environment including animals and plants

a)

biotic factor

b)

abiotic factor

2.

Non-living things in the environment

a)

biotic factors

b)

abiotic factors

3.

Which of the following is NOT an abiotic factor?

a)

rocks

b)

temperature

c)

sunlight

d)

grass

4.

Which of the following is NOT a BIOTIC factor?

a)

sand

b)

grass

c)

bumblebee

d)

dog

5.

Take a look at the picture.

Is this biotic or abiotic?

a)

biotic

b)

abiotic

6.

Take a look at the picture.

Is this biotic or abiotic?

a)

biotic

b)

abiotic

7.

Take a look at the picture.

Is this biotic or abiotic?

a)

biotic

b)

abiotic

8.

Take a look at the picture.

Is this biotic or abiotic?

a)

biotic

b)

abiotic

9.

Take a look at the picture.

Is this biotic or abiotic?

a)

biotic

b)

abiotic

10.

Take a look at this pond ecosystem.

List (3) BIOTIC factors that you see

(a)  

11.

An abiotic factor is something that is _____________.

a)

Deadly

b)

Living

c)

Non-living

d)

Successful

12.

A biotic factor is something that is ________________.

a)

Helpful

b)

Living

c)

Non-living

d)

Temporary

13.

A palm tree is an example of a(n):

a)

Abiotic factor

b)

Biotic factor

14.

Temperature is an example of a(n):

a)

Abiotic factor

b)

Biotic factor

15.

Fungus is an example of a(n):

a)

Abiotic factor

b)

Biotic factor

16.

Soil is an example of a(n):

a)

Abiotic factor

b)

Biotic factor

17.

If the number of wolves were to increase in an ecosystem, what would happen to the moose population? The moose population would ________________.

a)

Increase

b)

Decrease

c)

Stay the same

18.

What effect would a severe drought have on an ecosystem?

a)

Positive

b)

Negative

c)

Neutral

19.

What effect would increasing nutrient availability have on an ecosystem?

a)

Positive

b)

Negative

c)

Neutral

20.

What effect does increasing the pH of water have on an aquatic ecosystem?

a)

Positive

b)

Negative

c)

Neutral

21.

The number of organisms an ecosystem can support without environmental degradation is called ____________________.

a)

Carrying capacity

b)

Limiting factors

c)

Population density

d)

Simulations

22.

The scientific study of interactions among organisms, populations, and communities and their interactions with their environment.

a)

Population

b)

Ecology

c)

Succession

d)

Biosphere

23.

Abiotic can be defined as?

a)

An organism that is alive

b)

Non-living parts of the environment

c)

Living Parts of the environment

d)

A new kind of Pokemon that lives with Pikachu

24.

Biotic can be defined as

a)

the living parts of an environment

b)

non-living parts of an environment

c)

rocks and water

d)

snakes and water

25.

Biotic can be defined as

a)

the living parts of an environment

b)

non-living parts of an environment

c)

rocks and water

d)

snakes and water

26.

What is the energy source for the water cycle?

a)

sun

b)

wind

c)

rain

d)

oceans

27.

What are clouds made of?

a)

dry air

b)

water

28.

On Earth, what process generates most of the water vapor?

a)

Condensation

b)

Evaporation

c)

Precipitation

d)

Transpiration

29.

What is the energy source that drives the water cycle?

a)

The moon T

b)

The heat from our home in the winter all around the world

c)

The sun

d)

he heat generated solely from the core of the earth

30.

What are formed when water vapor condenses?

a)

Clouds

b)

Mountains

c)

Transpiration

d)

Valleys

31.

Water in its gas form is called ____________________,

a)

water vapor

b)

precipitation

c)

ice

d)

air

32.

Which of the following is an example of precipitation?

a)

sleet

b)

hail

c)

snow

d)

all of the above

33.

If groundwater reaches earth's surface, how does it reenter the water cycle?

a)

by transpiration

b)

by evaporation

c)

by accumulation

d)

it can't

34.
What is A?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
35.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
36.

Which example is a form of precipitation?

a)

Dew

b)

Fog

c)

Frost

d)

Hail

37.

In which area would the rate of evaporation be the lowest?

a)

Over the ocean

b)

Over the mountains

c)

Over the rainforest

d)

Over the desert

38.

What would happen if the Sun is removed from the water cycle?

a)

The water cycle would not include precipitation but would continue with groundwater flow.

b)

The water cycle would no longer occur because the Sun provides the energy for evaporation and transpiration.

c)

The water cycle would no longer occur because the Sun provides energy for the formation of clouds.

d)

The water cycle would not include evaporation and transpiration but would continue with condensation.

39.

A student draws a model to represent the precesses involved in the water cycle, as shown. To which process is the formation of clouds related?

a)

Condensation

b)

Evaporation

c)

Freezing

d)

Melting

40.

The image shows various stages in the water cycle. During which stage does water flow back towards the sea as runoff?

a)

W

b)

X

c)

Y

d)

Z

41.

On Earth, what process generates most of the water vapor?

a)

Condensation

b)

Evaporation

c)

Precipitation

d)

Transpiration

42.

Rain and snow are two different forms of precipitation that fall on Earth's surface. Which factor is responsible for there being different forms of precipitation?

a)

Evaporation

b)

Run-off

c)

Temperature

d)

Transpiration

43.

What is precipitation?

a)

Sweat from our bodies on hot days

b)

Warm rain but not cold snow or sleet

c)

Gas that we use in furnaces or ovens

d)

Any form of water that falls from the sky

44.

What is another name or synonym for the water cycle?

a)

Geologic cycle

b)

Hydrologic cycle

c)

Geosphere

d)

Carbon cycle

45.

What is the energy source that drives the water cycle?

a)

The moon T

b)

The heat from our home in the winter all around the world

c)

The sun

d)

he heat generated solely from the core of the earth

46.
Water that flows or moves from one location to another on Earth.
a)
Running Water
b)
Condensation
c)
Atmosphere
d)
River
47.
A large body of water surrounded by land. Most of them are freshwater. 
a)
Lake
b)
Water
c)
Precipitation
d)
Transpiration
48.
Water beneath the surface of the ground.
a)
Groundwater
b)
Earth
c)
Surface runoff
d)
Reservoire
49.

Which compound does NOT contain carbon atoms?

a)

carbon dioxide

b)

ammonium

c)

calcium carbonate

d)

methane

50.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
51.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
52.
What does not produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
53.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
54.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
55.
How does the carbon in grass become part of a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion. 
c)
The carbon ends up in the lion's food chain. 
d)
The lion breathes in carbon given out by the plant
56.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
57.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
58.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
59.
If the plant population decreased, the amount of carbon would _________.
a)
Stay the same
b)
Increase
c)
Decrease
60.

Which is a true statement?

a)

Humans depend on oxygen, plants depend on carbon dioxide

b)

Plants produce carbon dioxide

c)

Humans depend on carbon dioxide, plants depend on oxygen

d)

Humans don't depend on plants for the air they need

61.

Which of the following creates a calcium carbonate structure?

a)

plants

b)

cows

c)

corals

d)

decomposers

62.

What is the ultimate source of energy for most organisms?

a)

The Sun

b)

The Earth

c)

Plants

d)

Producers

63.
In the food chain, which of the pictures is a PRODUCER?
a)
Sun
b)
Plants
c)
Ladybug
d)
Chicken
64.

Which animal is the top predator?

a)

hawk

b)

lizard

c)

snake

d)

grass

65.

Which animal is not the top predator but, a predator to a mouse?

a)

hawk

b)

rabbit

c)

snake

d)

grass

66.

Hunts other organisms

a)

Predator

b)

Prey

c)

Autotroph

d)

Decomposer

67.

Hunted by other organisms

a)

Predator

b)

Prey

c)

Decomposer

d)

Autotroph

68.

Breaks down dead things

a)

Predator

b)

Prey

c)

Decomposer

d)

Autotroph

69.

Non-living

a)

Ecology

b)

Biodiversity

c)

Biotic

d)

Abiotic

70.

Living

a)

Biotic

b)

Abiotic

c)

Ecosystem

d)

Biodiversity

71.

Variety of life

a)

Ecosystem

b)

Biodiversity

c)

Biome

d)

Micro-Habitat

72.

Organisms that obtain energy by feeding on other organisms

a)

Producer

b)

Consumer

c)

Decomposer

73.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

74.

Consumers that eat only plants

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

75.

Consumers that eat only animals

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

76.

Consumers that eat both plants and animals

a)

Omnivores

b)

Carnivores

c)

Herbivores

d)

Scavengers

77.

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

a)

chain

b)

web

c)

pyramid

d)

plate

78.

A food _______ consists of many overlapping food ________.

a)

web, chains

b)

chain, webs

c)

pyramid, webs

d)

web, pyramids

79.

In the food web above, what eats the rabbit?

a)

Fox

b)

Hawk

c)

Vole

d)

Grass

80.

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

81.
Organisms that create their own energy from sunlight or chemicals
a)
Herbivore
b)
Omnivore
c)
Autotroph
d)
Heterotroph 
82.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
83.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
84.

Plants, insects, frogs, and snakes live in an ecosystem. What would happen if the snakes were removed from the ecosystem?

a)

Insect population would increase.

b)

Frog population would decrease.

c)

Frog population would increase.

d)

Plant population would decrease.

85.

What type of organisms make their own food for energy?

a)

Producers

b)

Predators

c)

Consumers

d)

Decomposers

86.

What does the arrow represent in a food chain?

a)

How far organisms live from each other.

b)

The transfer of energy from one organism to another.

c)

The size of the organisms from smallest to largest.

d)

The amount of energy the organism receives from the sun.

87.

Consumer is...

a)

An organism that makes its own food for energy.

b)

Energy that moves through a food chain starts with--

c)

The path of food energy from one organism to another.

d)

An organism that gets energy from eating another organism.

88.

Based on the picture, which includes herbivore is...

a)

frog

b)

Grasshopper

c)

Snake

d)

eagle

89.

A new fish that also eats plants is introduced into a pond. What changes would occur to this pond ecosystem?

a)

The large fish population will decrease.

b)

The plant population will decrease.

c)

The small fish population will increase.

d)

The new fish population will decrease.

90.

Based on the food chain, what effect would be the most likely direct result of increasing the number of fish?

a)

Beetles would have trouble finding food.

b)

There would be more kinds of plants.

c)

The population of beetles decreased.

d)

Plants would no longer survive in this habitat.

91.

Which of the following is represented in the diagram?

a)

Evaporation of water

b)

Reflection of light

c)

Animal life cycle

d)

Transfer of energy

92.

In an energy pyramid, energy_______ as you move up the pyramid

a)

Increases

b)

Decreases

c)

Stays the same

d)

Changes up and down

93.

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

a)

10%

b)

20%

c)

80%

d)

90%

94.

If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy?

a)

It is destroyed after it is used up

b)

It is used to grow plants

c)

It is lost completely as body heat

d)

It is used for life processes like movement, creating offspring producing waste or lost as body heat

95.
The omnivore are animals that eat 
a)
plants 
b)
animals 
c)
plants and meat 
96.
The animals that eat that primary consumers are 
a)
tertiary cconsumers
b)
secondary consumers 
c)
producers 
97.
They are animals that eat only meat 
a)
herbivore 
b)
carnivore 
c)
omnivore 
98.

herbivores like to eat?

a)

meat

b)

grass

c)

meat and grass

d)

pizza

99.

carnivores eat?

a)

meat

b)

grass

c)

both meat and grass

d)

chocolate

100.

omnivores eat?

a)

meat

b)

grass

c)

both meat and grass

d)

pop tarts

101.

elephant

a)

omnivore

b)

herbivore

c)

carnivore

102.

Grizzly Bear

a)

omnivore

b)

herbivore

c)

carnivore

103.

lion

a)

omnivore

b)

herbivore

c)

carnivore

104.

raccoon

a)

omnivore

b)

herbivore

c)

carnivore

105.

wolf

a)

omnivore

b)

herbivore

c)

carnivore

106.
A feeding relationship where one organism hunts and one is hunted.
a)
Commensalism
b)
Decomposistion
c)
Mutualism
d)
Predator-Prey
107.
An animal that feeds on what another animal has killed is known as a:
a)
Scavenger
b)
Mutualist
c)
Decomposer
d)
Parasite
108.
An animal that hunts and consumes other organisms is known as a:
a)
Prey
b)
Decomposer
c)
Predator
d)
Commensalist
109.
An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:
a)
Predator
b)
Autotroph
c)
Producer
d)
Decomposer
110.
The organism that is hunted and eaten in a particular feeding relationship is known as:
a)
Predator
b)
Decomposer
c)
Prey
d)
Autotroph
111.
A relationship that describe a close interaction between two different species is known as what?
a)
Biodiversity
b)
Symbiosis
c)
Predation
d)
Emigration
112.
This is known as a relationship in which one organism benefits, while the other is unaffected.
a)
Parasitism
b)
Mutualism
c)
Immigration
d)
Commensalism
113.
A clownfish uses a sea anenome as a safe place to live. While living there, the clownfish lures in food for the anenome. This is an example of what type of relationship?
a)
Predator-Prey
b)
Commensalism
c)
Mutualism
d)
Parasitism
114.
A mosquito feeds off of the blood of different organisms. This usually causes discomfort to the organism and sometimes disease and death. This is an example of:
a)
Parasitism
b)
Decomposition
c)
Commensalism
d)
Mutualism
115.
This is known as a relationship in which both organisms involved benefit. 
a)
Predator-Prey
b)
Commensalism
c)
Mutualism
d)
Decomposition
116.
A feeder fish usually follows behind sharks to pick up food scraps that they leave behind. The fish gets food and the shark is unaffected. This is an example of:
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Decomposition
117.
A relationship between two organisms where one benefits while the other is harmed is known as what?
a)
Decomposition
b)
Consummerism
c)
Mutualism
d)
Parasitism
118.
An organism that needs to use chemicals to make its own food is known as a(n):
a)
Heterotroph
b)
Autotroph
c)
Decomposer
d)
Consumer
119.
This term describes a living part of an environment.
a)
Biotic factor
b)
Sunlight
c)
Abiotic Factor
d)
Niche
120.
An organism that eats other organisms to obtain energy is known as a:
a)
Mutualist
b)
Autotroph
c)
Producer
d)
Heterotroph
121.
Non-living components of an environment are considered to be:
a)
Biotic Factors
b)
Heterotrophs
c)
Abiotic factors
d)
Decomposers
122.
This is the study of interactions between organisms and the interactions that organisms have with their environment. 
a)
Evolution
b)
Biology
c)
Ecology
d)
Commensalism
123.

In which type of interaction does one animal eat another for energy and nutrients?

a)

Competition

b)

Parasitism

c)

Predation

d)

Mutualism

124.

Which of the following is NOT a symbiotic relationship?

a)

Competition

b)

Commensalism

c)

Mutualism

d)

Parasitism

125.

What term describes organisms striving for the same limited resources?

a)

Competition

b)

Predation

c)

Mutualism

d)

Commensalism

126.

Commensalism is a symbiotic relationship in which what occurs between the organisms?

a)

both organisms are harmed

b)

one benefits, the other is unaffected

c)

one benefits, the other is harmed

d)

one benefits by eating the other

127.

Fleas living within a mammal's fur describes this type of relationship:

a)

Competition

b)

Mutualism

c)

Predation

d)

Parasitism

128.

A crab is protected from fish when an anemone rides on its shell. The anemone gets more food.

a)

Commensalism

b)

Competition

c)

Predation

d)

Mutualism

129.

Orchid vines are skinny and grow on the trunk of trees to get more light and space with no negative effect.

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Competition

130.

Overall, all the interactions between organisms in ecosystems...

a)

Keep ecosystems & populations unstable and random

b)

Keep ecosystems & populations stable and balanced

131.

Hermit crabs live in shells made and then abandoned by snails. This relationship neither helps nor harms the snails. Which interaction is this?

a)

Parasitism

b)

Mutualism

c)

Commensalism

d)

Competition

132.

Ostriches and Gazelles feed next to each other. They both watch for predators and alert each other to danger. Since the visual abilities of the two species are different, they can each identify threats the other animal would not as readily see. What type of interaction is this?

a)

Parasitism

b)

Mutualism

c)

Commensalism

d)

Competition

133.
A close, long-term relationship in which 2 different organisms live in close association with each other. 
a)
Carrying Capacity
b)
Coexistence
c)
Limiting Factor
d)
Symbiosis
134.

Which pair of organisms does not have a predator–prey relationship?

a)

A

b)

B

c)

C

d)

D

135.

Parasitism is the relationship between two organisms in which _______________.

a)

the two organisms help each other to find food in the environment

b)

the two organisms compete for food in the environment

c)

one organism helps the other organism to find food in the environment

d)

one organism benefits at the expense of the other organism

136.

Energy is lost in a food web as it is transferred from one organism to another. Which of the following is not a means by which energy is lost?

a)

Photosynthesis

b)

Respiration

c)

Excretion

d)

Defecation

137.

The ultimate source of energy in an ecosystem is/are _______________.

a)

primary consumers

b)

producers

c)

green plants

d)

the sun

138.

Refer to the pyramid of energy shown below and answer the question.


Which of the following organisms can belong in trophic levels R and S?

a)

Snake and Eagle respectively

b)

Fish and Worm respectively

c)

Cow and Grass respectively

d)

Corn and Human respectively

139.

Refer to the pyramid of energy shown below and answer the question.


An organism in trophic level P is a _______________.

a)

producer

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

140.

Refer to the food chain shown below answer the question.


Tree -> Caterpillar -> Bird -> X


Which of the following statements about the food chain is true?

a)

The primary consumers trap energy from the sun to make food through photosynthesis.

b)

Organism X can be a herbivore (e.g. a deer).

c)

The bird in the food chain is a secondary consumer.

d)

The bird and caterpillar have a mutualistic relationship.

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