Free Printable Unit 7

Free Printable Worksheets

Worksheets

Unit 7

Total questions: 189

Worksheet time: 4hrs 23mins

Name

Class

Date

1.

What is the order of succession shown in this figure?

a)

A, B, C, D

b)

B, A, D, C

c)

C, D, A, B

d)

D, A, B, C

2.

What type of succession is shown going from figure A to figure B?

a)

primary succession

b)

ecological succession

c)

secondary succession

d)

intermediate

3.

What is the goal of the pioneer species in Primary Succession?

a)

To kill the dead materials after a disaster

b)

To rebuild soil

c)

To feed Johnny

d)

To put fresh oxygen into the air

4.

The picture shows what type of succession?

a)

primary

b)

secondary

c)

tertiary

d)

quadanary

5.

The picture shows what type of succession?

a)

primary

b)

secondary

c)

tertiary

d)

quadanary

6.

What is the name given to lichen or algae after a primary succession?

a)

pioneer species

b)

volunteer species

c)

founder species

d)

conqueror species

7.

What are examples of pioneer species in a primary succession?

a)

Bushes and Shrubs

b)

Oak trees

c)

Mossess and Lichens

d)

A rose Bush

8.

Reaches a climax community quicker because soil is already present

a)

primary succession

b)

secondary succession

c)

both types of succession

9.

Succession type?

a)

primary succession

b)

secondary succession

c)

tertiary succession

d)

variable succession

10.

Why does primary succession typically occur over a longer period of time (as compared to secondary succession)?

a)

Because trees do not perform respiration

b)

Because the climax community is usually a forest.

c)

Because primary succession already has soil

d)

Because primary succession does not begin with soil being present

11.

What is an example of an area that is likely to undergo primary succession?

a)

Glaciers melt and leave exposed rock

b)

Plants die from drought and decompose

c)

Land is bulldozed and soil remains

d)

A forest fire occurs

12.

The final stage of ecological succession can typically be observed when evidence of a _____________________ is present.

a)

Mature Tree Growth

b)

Climax Community

c)

Pioneer Community

d)

housing community

13.

Primary or secondary ecological succession?

a)

b)

14.

Primary or secondary ecological succession?

a)

b)

15.

Primary or secondary ecological succession?

a)

b)

16.

Primary or secondary ecological succession?

a)

b)

17.

Primary or secondary ecological succession?

a)

b)

18.

What is ecological succession?

a)

A slow change in an environment

b)

A change that takes days in an environment

c)

No change

d)

Abiotic change

19.

What are examples of pioneer species in a primary succession?

a)

Bushes and Shrubs

b)

Oak trees

c)

Mossess and Lichens

d)

A rose Bush

20.

A pioneer species is...

a)

a large organism

b)

the first organisms to adapt to a new environment

c)

The best organism

d)

Abiotic organisms

21.

What is the most important function of pioneer species?

a)

To create rocks

b)

To create soil and add nutrients to the environment

c)

To look nice

d)

Food for animals

22.

A large tree forest is an example of ...

a)

a small community

b)

a abiotic community

c)

a climax community

d)

a pioneer species

23.

Which is the correct order in primary succession?

a)

Rocks, Lichens & Mosses, Bushes & Shrubs, Trees

b)

Lichens & Mosses, Rocks, Trees, Bushes & Shrubs

c)

Trees, Bushes and Shrubs, Lichens & Mosses, Lichens & Mosses

d)

Rocks, Grass, Trees, Bushes & Shrubs

24.

An area that begins with bare rock and takes longer to become a forest is ...

a)

Primary Succession

b)

Secondary Succession

25.

An area that is faster to become a forest due to the presence of soil is ...

a)

Primary Succession

b)

Secondary Succession

26.

During a forest fire most vegetation (plants) burn. Which ecological succession will take place after a forest fire?

a)

Primary

b)

Secondary

27.

The Sun is the source of all energy within an ecosystem. Plants depend on light from the sun in order to perform the process of photosynthesis. Sunlight is an example of what type of factor?

a)

Biotic

b)

Abiotic

28.

Termites are tiny insects that can cause severe damage to homes and other structures that consist of wood. Termites are an example of what type of factor.

a)

Biotic

b)

Abiotic

29.

Water is a compound that consists of 2 hydrogen atoms and 1 oxygen atom. Up to 60% of an adult human is made up of water. Water is an example of what type of factor?

a)

Biotic

b)

Abiotic

30.

Air is a mixture of colorless gases. The air that makes up the Earth's atmosphere consists primarily of nitrogen and oxygen. Air is an example of which type of factor?

a)

Biotic

b)

Abiotic

31.

An arctic blast pushed its way through several of the Northern state in the United State. The temperatures dropped below freezing for several days. Temperature is an example of which type of factor?

a)

Biotic

b)

Abiotic

32.

An angler fish has a fleshy growth on its head that gives off light. This part acts as a lure to help the angler fish catch its prey. An anglerfish is an example of which type of factor?

a)

Biotic

b)

Abiotic

33.

All living things or organisms in an ecosystem are

a)

None

b)

biotic factors

c)

abiotic factors

34.

Is a deer an abiotic or biotic factor?

a)

abiotic

b)

biotic

35.

Is a rose an abiotic or biotic factor?

a)

abiotic

b)

biotic

36.

Is a tree considered abiotic or biotic?

a)

Biotic

b)

Abiotic

c)

Neither

37.

Is a rock considered abiotic or biotic?

a)

Abiotic

b)

biotic

c)

neither

38.

What is the difference between the biotic and abiotic factors?

a)

Biotic factors are living things and abiotic factors are nonliving things.

b)

Biotic factors are nonliving things and abiotic factors are living things.

39.

Which is an example of an abiotic factor in a pond environment?

a)

The water

b)

A frog

c)

A grasshopper

d)

A snake

40.

Which is an example of a biotic factor in the environment?

a)

The climate in the region

b)

Carnivores that consume other animals

c)

Amount of helium gas in the air

d)

Flow of water in a river

41.

Which of the following shows an abiotic factor interacting with a biotic factor in the environment?

a)

Lamprey eels survive by attaching themselves to trout.

b)

Water temperature affects its oxygen level.

c)

Low light intensity affects the growth of forest pine trees.

d)

Gypsy moth caterpillars eat the leaves of apple tree.

42.

Which of these is a biotic factor in a river ecosystem?

a)

the types of microorganisms that live in the river water

b)

the amount of soil and other particles carried by the river

c)

the speed at which the river water flows toward the ocean

d)

the amount of rain that flows off the land and into the river

43.

Which of the following is a biotic factor in an ocean ecosystem?

a)

the salt content of the water

b)

the temperature of the water

c)

the fish in the water

d)

the oxygen in the water

44.

Where do all life forms get their energy?

a)

Earth's Core

b)

Water

c)

Plants

d)

The Sun

45.

An organism that lives by breaking apart dead organic matter into simpler parts is...

a)

scavenger

b)

consumer

c)

decomposer

d)

carnivore

46.

An animal that eats other animals is a....

a)

carnivore

b)

omnivore

c)

herbivore

d)

decomposer

47.

Animals that are being hunted and eaten by predators.

a)

prey

b)

extinct

48.

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

49.

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

50.

An animal that eats only plants is an...

a)

carnivore

b)

omnivore

c)

herbivore

d)

decomposer

51.

Where an animal lives is called the animal's ______

a)

wildlife

b)

habitat

c)

environment

d)

carnivore

52.

Which of the following is a producer?

a)

Maple tree

b)

Sunfish

c)

Bunny

d)

Bear

53.

Where does the energy start in this food chain?

a)

Plant

b)

Sun

c)

Deer

d)

Wolf

54.

Plants produce their own food through...

a)

symbiosis

b)

photosynthesis

c)

genetics

d)

magic

55.

The second link in a food chain is a...

a)

consumer

b)

producer

c)

herbivore

d)

carnivore

56.

A herbivore is a...

a)

consumer that eats both plants and other animals

b)

consumer that only eats other animals

c)

consumer that only eats plants

57.

A herbivore is also known as...

a)

primary consumer

b)

secondary consumer

c)

tertiary consumer

58.

The second consumer in the food chain is called...

a)

primary consumer

b)

secondary consumer

c)

tertiary consumer

59.

The secondary consumer is a carnivore which means...

a)

a consumer that eats both plants and other animals

b)

a consumer that eats only plants

c)

a consumer that eats only other animals

60.

The third consumer in the food chain is called...

a)

primary consumer

b)

secondary consumer

c)

tertiary consumer

61.

An omnivore is a...

a)

consumer that eats both plants and other animals

b)

consumer that eats only other animals

c)

consumer that eats only plants

62.

Examples of decomposers are...

a)

plants

b)

animals

c)

bacteria and fungi

63.

What is a producer?

a)

Organism that creates their own food.

b)

Organism that eat other organisms for energy

c)

Organism that eat other dead organisms

64.

What is a food chain?

a)

The flow of energy from one thing to another

b)

The way animals eat each other

c)

The way the sun makes everything

d)

How the plants grow

65.

What is a consumer?

a)

Organism that creates their own food.

b)

Organism that eat other organisms for energy

c)

Organism that eat other dead organisms

66.

What animal is on the top of the food chain?
*Remember Humans are on the top of all food chains because we do not get hunted.

a)

Grass

b)

Grasshopper

c)

Mouse

d)

Owl

67.

What do Herbivores eat?

a)

Plants ONLY

b)

Animals ONLY

c)

Plants AND Animals

68.

What is a decomposer?

a)

b)

c)

d)

69.

What are plants called in a food chain?

a)

Producers

b)

Consumers

c)

Decomposers

d)

Scavengers

70.

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

71.

Which of these organisms would receive energy from the snake?

a)

Plant

b)

Rabbit

c)

Mouse

d)

Hawk

72.

Which of these is true about this food web?

a)

The Owl gets its energy from the producer.

b)

The Lion gets its energy only from a wild cat.

c)

The Kite gets its energy from the goat.

d)

The Mouse is most likely to die, several ways.

73.

Which of the following is a producer?

a)

b)

c)

d)

74.

Who does the owl get energy from?

a)

Grass

b)

Grasshopper

c)

Mouse

d)

Ow

75.

Who is the producer in this food chain?

a)

Grass

b)

Grasshopper

c)

Mouse

d)

Ow

76.

Who does the grasshopper get energy from?

a)

Grass

b)

Grasshopper

c)

Mouse

d)

Ow

77.

Which event is the best example of competition between species in a pond?

a)

dragonflies landing on lily pads

b)

lizards and snakes lying in the sun

c)

hawks eating mice

d)

frogs and toads eating flies

78.

Use the diagram answer the question.
What is a fitting description for this diagram?

a)

A Food Chain

b)

An Ecosystem

c)

A Food Web

d)

Biotic and Abiotic Factors

79.

Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?

a)

Frog, Dragon Fly and snake

b)

Frog, trout and dragon fly

c)

Frog, salamander and trout

d)

Frog and phytoplankton

80.

Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?

a)

Population

b)

Resources

c)

Community

d)

Competition

81.

What is the best explanation for an energy pyramid?

a)

It shows the FLOW of energy from one organism to the next.

b)

It shows HOW much energy flows through a food web

c)

It shows the MEMBERS in a single organism

82.

The deer, grasshopper, and bird are all examples of which type of consumers on this food pyramid?

a)

decomposers

b)

omnivores

c)

carnivore

d)

herbivore

83.

About how much percent of energy is passed on from one organism to to the next on a food web pyramid.

a)

100 percent of all energy gets passed

b)

45 percent of all energy gets passed

c)

10 percent of all energy gets passed

d)

0 percent of all energy gets passed

84.

Which of the following is producer/autotroph?

a)

rabbit

b)

frog

c)

tree

d)

worm

85.

Using the food web which of the following is a primary consumer?

a)

butterfy

b)

snake

c)

fox

d)

frog

86.

Using food web which of the following is a secondary consumer?

a)

snake

b)

worm

c)

butterfy

d)

squirrel

87.

Using the food web which of the following is a tertiary consumer?

a)

frog

b)

bird

c)

eagle

d)

worm

88.

Using the food web what would happen if the eagle became extinct?

a)

The frog population would decrease.

b)

The frog population would increase.

c)

The butterfly population would increase.

d)

The snake population would decrease.

89.

What % of energy is passed from organism to organism?

a)

100%

b)

10%

c)

5%

d)

25%

90.

Which two animals below are primary consumers

a)

moth and ant

b)

mushroom and moth

c)

ant and hawk

d)

spider and mouse

91.

Which of the following is a tertiary consumer?

a)

hawk

b)

mouse

c)

moth

d)

spider

92.

Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.

a)

mutualism

b)

commensalism

c)

competition

d)

parasitism

93.

Red-billed oxpeckers are birds that feed on parasites found on an impala. The impala gets rid of parasites and the red-billed oxpeckers get a yummy dinner. This is an example of _______.

a)

commensalism

b)

mutualism

c)

neutralism

d)

competition

94.

A relationship between two organisms in which one organism benefits and the other is unharmed.

a)

Mutualism

b)

Competition

c)

Parasitsm

d)

Commensalism

95.

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.

a)

Mutualsim

b)

Parasitism

c)

Commensalism

96.

Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment (harm).

a)

Mutualsim

b)

Parasitism

c)

Commensalism

97.

Two organisms that are so similar they can interbreed in nature and produce fertile offspring.

a)

biotic factor

b)

herbivore

c)

ecosystem

d)

species

98.

Silverfish live and hunt with army ants. They share the prey. They neither help nor harm the ants.

a)

Mutualism

b)

Parasitism

c)

Commensalism

d)

Predation

99.

a relationship that occurs when two or more organims of the same species need the same resource at the same time

a)

competition

b)

symbiosis

c)

predation

100.

A cuckoo and a warbler are both birds. A cuckoo will find the nest of warbler instead of building her own, and she harms the warbler by knocking a warbler egg out of nest and laying her own. When the warbler mother returns, she isn’t aware of the switch. The warbler will then raise the baby cuckoo bird instead of her own baby. Which term best describes this relationship?

a)

Predation

b)

Parasitism

c)

Commensalism

d)

Mutualism

101.

Barnacles are sea creatures that create a home by attaching themselves to whales. The whales are unaffected by the barnacles. Which term best describes this symbiotic relationship?

a)

Commensalism

b)

Parasitism

c)

Predation

d)

Mutualism

102.

Ostriches and gazelles are two animals that live in Africa. They graze for food near each other because they help each other spot predators. The gazelle has excellent eyesight, but poor hearing, and the ostrich has excellent hearing, but poor eyesight. These two animals will alert one another when danger is near. Which term best describes this relationship?

a)

Predation

b)

Commensalism

c)

Mutualism

d)

Parasitism

103.

Which level of organization is the most complex?

a)

organism

b)

population

c)

community

d)

ecosystem

104.

Multiple organisms of the same species describes a

a)

organism

b)

population

c)

community

d)

ecosystem

105.

What do ecosystems have that the other three levels of organization do not have?

a)

living things

b)

biotic factors

c)

abiotic factors

d)

organisms

106.

A forest full of many kinds of trees and grasses is an example of a

a)

group

b)

organism

c)

population

d)

community

107.

Which is an example of an organism?

a)

a beetle

b)

a lake

c)

a rock

d)

a shell

108.

Which level of organization is more complex than a population and less complex than an ecosystem?

a)

organism

b)

population

c)

community

d)

ecosystem

109.

Which is an example of a population?

a)

different kinds of bacteria

b)

A group of fish and sharks

c)

deer, bear, and rabbits

d)

A herd of cattle

110.

which is another word for an organism?

a)

abiotic factor

b)

biotic factor

c)

nonliving thing

111.

Which is the definition of a community

a)

multiple organisms of the same species

b)

all the living and nonliving things in an area

c)

a living thing

d)

multiple organisms of different species

112.

The smallest unit of life that can sustain itself is called...

a)

an organism.

b)

the biosphere.

c)

a population.

d)

a community.

113.

A group of the same organisms living together in the same place at the same time is:

a)

An organism

b)

A population

c)

A community

d)

A biome

114.

What are groups of different populations living togther in the same place at the same time called?

a)

An organism

b)

A population

c)

A community

d)

A biosphere

115.

What is it called when you have groups of different populations along with their abiotic factors?

a)

An organism

b)

A population

c)

A community

d)

An ecosystem

116.

A duck, a dragonfly, a morel mushroom and a bobcat are all examples of...

a)

organisms.

b)

populations.

c)

communties.

d)

ecosystems.

117.

Andrea is on the grils cross country tream. She is heading out for a run when she comes across 20 Canadian geese. What level of organization is this group of Canadian geese?

a)

organism

b)

population

c)

community

d)

biome

118.

What is a group of ecosystems that share similar climates and types of organisms called?

a)

A community

b)

A biome

c)

An ecosystem

d)

A biosphere

119.

Water temperature would be an example of ...

a)

a biotic factor.

b)

an abiotic factor.

120.

The organisms in a community, as well as all of the nonliving aspects of the environment are a(n):

a)

Population

b)

Community

c)

Habitat

d)

Ecosystem

121.

Living factors or organisms that affect an ecosystem are

a)

abiotic factors

b)

species

c)

trophic level

d)

biotic factors

122.

What are the biotic factors in this image?

a)

sunlight, elephants, and grasses

b)

sunlight, water, and air

c)

elephants, plants, trees

123.

What are the abiotic factors in this image?

a)

water, sunlight, dirt, air

b)

birds and plants

c)

water, plants, and birds

124.

An ecosystem contains living and nonliving things.

a)

True

b)

False

125.

Which of the following is a population?

a)

hawks, barred owls, and eagles on NC coast

b)

mountain stream

c)

all the frogs in a pond

d)

blue-tailed skinks (lizards) around a barn

126.

What level of organization can be seen here?

a)

Species

b)

Population

c)

Community

d)

Ecosystem

127.

What level of organization can be observed in the image?

a)

Species

b)

Population

c)

Community

d)

Ecosystem

128.

A __________ includes all living and non-living things in an environment.

a)

population

b)

niche

c)

abitotic

d)

ecosystem

129.

At what population was carrying capacity met?

a)

250

b)

1000

c)

400

d)

720

130.

Exponential population growth can be described as

a)

growth when resources are limited

b)

a j-shaped curve

c)

a s-shaped curve

d)

growth that reaches carrying capacity

131.

Logistic population growth can be described as

a)

growth when resources are limited

b)

a s-shaped curve

c)

reaching carrying capacity

d)

all of the above

132.

What limits Population Growth?

a)

birth rates increasing

b)

resources being used up

c)

natural selection taking place

d)

none of the above

133.

Density-independent limiting factors to population growth includes

a)

stress from overcrowding

b)

parasitism

c)

competition

d)

natural disasters

134.

As resources become less available the growth of a population

a)

slows or stops

b)

decreases or increases

c)

up or down

d)

in or out

135.

What is a condition that halts population growth?

a)

limiting factors

b)

renewable resources

c)

climate

d)

conservation

136.

Exponential Growth occurs when-

a)

populations have plenty of food/space

b)

home to keystone species

c)

have few evasive species in a habitat

d)

have little to no competition or predators

137.

Three factors can affect population size

a)

births, deaths,leaves or enters population

b)

deaths, birth, buildings

c)

photosynthesis, weather, deaths

d)

houses, weather, heath

138.

Factor that causes population growth to decrease.

a)

growth factor

b)

limiting factor

c)

density factor

d)

environmental factor

139.

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

a)

It will increase.

b)

It will decrease.

c)

It will stay the same.

d)

It will fluctuate.

140.

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

a)

It will increase.

b)

It will decrease.

c)

It will stay the same.

d)

It will fluctuate.

141.

Why would advances in medicine lead to population growth?

a)

Curing deadly diseases allows people to live longer

b)

People are unable to have babies without medical help

c)

Babies do not grow if they don't take their medicine

d)

New drugs allow mothers to have multiple births, like octuplets

142.

If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

a)

The bird population would stay the same

b)

The bird population would infinitely increase

c)

The bird population would decrease

143.

What type of growth is shown in the diagram?

a)

exponential growth

b)

logistic growth

c)

predator-prey cycle

d)

boom-bust curve

144.

Largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population crash

c)

lag phase

d)

mutualism

145.

What do you call a period of rapid growth?

a)

exponential growth

b)

logistic growth

c)

emigration

d)

predator-prey cycle

146.

Which type of growth is best illustrated by this rabbit population?

a)

exponential

b)

logistic

c)

S-shaped

d)

predator-prey

147.

What is the carrying capacity for this sheep population?

a)

1.8 million

b)

1.25 million

c)

1.6 million

d)

1.o million

148.

Type of growth that occurs under ideal conditions?

a)

predator-prey cycle

b)

logistic

c)

exponential

149.

Type of growth that occurs when disease and parasites are present...

a)

exponential

b)

J-shaped

c)

predator-prey

d)

logistic

150.

What is the approximate carrying capacity of Paramecium aurelia cultured alone?

a)

150

b)

400

c)

450

d)

500

151.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

152.

Which limiting factor is density independent?

a)

water

b)

food

c)

natural disasters

153.

An environmental factor such as amount of space, disease, and availability of mates that depends on the number of members in a population is called

a)

density- dependent factor

b)

density- independent factor

154.

Food, water, sunlight, shelter, and space are resources that are called

a)

limiting factors

b)

species

c)

biotic

d)

none of the above

155.

Food, water, sunlight, shelter, and space are resources that are called

a)

limiting factors

b)

species

c)

biotic

d)

none of the above

156.

Any thing or organism that regulates the size of a population of another organism is known as __________.

a)

a limiting measure

b)

a limiting factor

c)

factorization

d)

materialization of precipitation

157.

Which of the following is a density dependent factor?

a)

volcanic eruption

b)

earthquake

c)

disease

d)

hurricane

158.

Review: What is the carrying capacity of a population?

a)

The most individuals a population that can be supported from the environment

b)

How much weight a population can carry

c)

The amount of food needed to fee a population

d)

When a population grows without stopping

159.

What is a limiting factor?

a)

Something that causes the growth of a population to decrease

b)

Something that causes a population to grow a lot

160.

Limiting factors that affect large, dense populations more than small, scattered populations are called ________________.

a)

Density dependent limiting factors

b)

Density independent limiting factors

161.

Which of the following would be considered a density dependent limiting factor?

a)

Floods

b)

Tornadoes

c)

Predators

d)

Earthquake

162.

Arctic foxes eat Arctic hares. What would happen to the hare population if the fox population increased rapidly?

a)

The hare population would decrease

b)

The hare population would increase

c)

There would be no change on the hare population

163.

An earthquake occurs in California and kills 500 people. Is this an example of a density dependent or independent limiting factor?

a)

Independent

b)

Dependent

164.

Review: What type of growth curve is shown in the picture?

a)

Logistic

b)

Exponential

165.

What is the carrying capacity of this population?

a)

100

b)

200

c)

300

d)

400

166.

The graph of logistic growth can be described as...

a)

S-shaped

b)

J-shaped

c)

U-shaped

167.

_____________- the number of individuals in a given area

a)

Dispersion

b)

Population density

c)

Population size

168.

_____________- the number of individuals in a population

a)

Dispersion

b)

Population density

c)

Population size

169.

Factors that affect population size:

INCREASE: Number of ___________ & ____________

(Choose 2 answers)

a)

Birth

b)

Death

c)

Immigration

d)

Emigration

170.

Factors that affect population size:

DECREASE: Number of ___________ & ____________

Choose all that applies.

a)

Birth

b)

Death

c)

Immigration

d)

Emigration

171.

Exponential growth displays a ____-shaped curve which indicates a steady increase of population size.

a)

J

b)

S

c)

C

d)

V

172.

Logistic growth displays a ____-shaped curve which indicates a population size capped at carrying capacity.

a)

J

b)

S

c)

C

d)

V

173.

Example of Density Dependent Factors are:

Choose all that applies.

a)

Food

b)

water

c)

shelter

d)

weather

174.

How much of the Earth's water is stored in the oceans?

a)

50%

b)

67%

c)

97%

d)

85%

175.

What is it called when water vapor cools and changes into a liquid?

a)

condensation

b)

respiration

c)

precipitation

d)

evaporation

176.

The three steps of the water cycle include:

a)

condensation, precipitation, filtration

b)

filtration, irrigation, evaporation

c)

precipitation, condensation, evaporation

d)

precipitation, filtration, evaporation

177.

Which of the following is NOT part of the carbon cycle?

a)

condensation

b)

photosynthesis

c)

combustion

d)

respiration

178.

Which of these is the greatest cause of harmful levels of carbon in the atmosphere?

a)

respiration

b)

combustion

c)

photosynthesis

d)

decomposition

179.

What is one way that people add Nitrogen into the environment?

a)

By littering

b)

By using fertilizer on farms

c)

By burning fossil fuels

180.

Where does the carbon come from that plants use?

a)

Animals

b)

Water

c)

Air

d)

Connecticut

181.

What cycle is shown in the diagram?

a)

The Life Cycle

b)

The Nitrogen Cycle

c)

The Carbon Cycle

d)

The Water Cycle

182.

How do decomposers help the carbon cycle?

a)

Carbon is leaked into the atmosphere when fossil fuels are burned.

b)

Dead, organic matter is broken down and release carbon dioxide into the air

c)

Volcanoes and fires release large amounts of carbon dioxide.

d)

Decaying organisms are needed for carbon to be released

183.

When a consumer dies, it will likely get consumed by _________. (nature's recyclers)

a)

wolves and bears

b)

mice and rabbits

c)

foxes and coyotes

d)

bacteria and fungi

184.

The process of plants losing water through their leaves is called ____.

a)

condensation

b)

evaporation

c)

transpiration

d)

exhaling

185.

What is the only process that removes carbon from the atmosphere?

a)

combustion

b)

cellular respiration

c)

photosynthesis

d)

decomposition

186.

What converts nitrogen into a useable form for plants and animals?

a)

bacteria

b)

fungi

c)

rain

187.

What is the largest reservoir for water?

a)

the ocean

b)

rocks and minerals

c)

the atmosphere

d)

glaciers

188.

Carbon dioxide is added to the atmosphere by

a)

Burning fossil fuels

b)

Cellular respiration

c)

Decomposing organic matter

d)

All answers are correct

189.

The water cycle is driven by

a)

water

b)

wind

c)

the sun

d)

Earth's rotation

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184 questions

IPA kelas 9

Worksheet

•

9th Grade