Free Printable Fall 2025 Semester Exam Review

1.

According to the line graph above, as the population of human beings increased what happened to the number of species on planet Earth?

a)

The number of species also increased

b)

The number of species remained the same

c)

The number of species decreased

d)

In 2010, both the population of humans and the number of species began to decrease

2.

Which of the following best describes the data set about rainfall in Honolulu?

a)

Every month the rainfall is the same

b)

Rainfall starts at 70 mm in January and decreases to 11mm in December.

c)

Over the course of 12 months rainfall starts at 70mm, decreases to 11mm, and then increases back up to over 70mm.

d)

Rainfall never is greater than 30mm

3.

According to the pie chart above, what are the two species that are the most common on planet Earth?

a)

Insects and Mammals

b)

Insects and Fungi

c)

Insects and Humans

d)

Insects and Mollusks

4.

The truck was driving erratically and speeding

a)

Quantitative Data

b)

Qualitative Data

5.

The temperature was 95 degrees Fahrenheit with 54% humidity

a)

Quantitative Data

b)

Qualitative Data

6.

The car was going 72 mph for 10 miles on the interstate.

a)

Quantitative Data

b)

Qualitative Data

7.

Descriptive Data

a)

Quantitative Data

b)

Qualitative Data

8.

The weather is sticky, hot, and humid.

a)

Quantitative Data

b)

Qualitative Data

9.

Numbers Data

a)

Quantitative Data

b)

Qualitative Data

10.

The ship is underwater

a)

Observation

b)

Inference

11.

I see the ship laying on its side.

a)

Observation

b)

Inference

12.

I see fish swimming around the ship

a)

Observation

b)

Inference

13.

I think the ship has been under the water for hundreds of years.

a)

Observation

b)

Inference

14.

The ship sank because of a terrible storm.

a)

Observation

b)

Inference

15.

I don't think the passengers survived the shipwreck.

a)

Observation

b)

Inference

16.

Based on the information which of these food chains would be correct?

a)

sun -> sunflower -> mouse -> raccoon -> cougar

b)

sunflower -> mouse -> raccoon -> cougar

c)

sun -> sunflower -> snake -> mouse

d)

sun <- sunflower <- mouse <- raccoon <- cougar

17.

Cougar

a)

consumer

b)

producer

18.

mouse

a)

consumer

b)

producer

19.

raccoon

a)

consumer

b)

producer

20.

sunflower

a)

consumer

b)

producer

21.

Which two are carnivores?

a)

cougar

b)

raccoon

c)

mouse

d)

snake

e)

sunflower

22.

The average efficiency of energy transfer between trophic levels is approximately

a)

10%

b)

25%

c)

15%

d)

5%

23.

water

a)

biotic

b)

abiotic

24.

plant

a)

biotic

b)

abiotic

25.

rocks

a)

biotic

b)

abiotic

26.

tree

a)

biotic

b)

abiotic

27.

cloud

a)

biotic

b)

abiotic

28.

sun

a)

biotic

b)

abiotic

29.

Which of these is a food chain in the food web?

a)

squid—phytoplankton—zooplankton—krill

b)

zooplankton—cod—leopard seal—penguin

c)

phytoplankton—cod—leopard seal—killer whale

d)

penguin—leopard seal—killer whale—elephant seal

30.

How does energy move in the food web picture?

a)

from cod to phytoplankton

b)

from zooplankton to squid

c)

from elephant seal to squid

31.

What is level 4 called?

a)

secondary consumer

b)

producer

c)

top predator

d)

primary consumer

32.

What is level 3 called?

a)

secondary consumer

b)

producer

c)

top predator

d)

primary consumer

33.

What is level 2 called?

a)

secondary consumer

b)

producer

c)

top predator

d)

primary consumer

34.

What is level 1 called?

a)

secondary consumer

b)

producer

c)

top predator

d)

primary consumer

35.

Which population in the energy pyramid contains the largest amount of stored energy?

a)

Agae

b)

Daphne

c)

Fish

d)

Osprey

36.

An example of pure carbon is

a)

ruby

b)

gold

c)

lead (not graphite)

d)

diamond

37.

All living things require water to survive.

a)

True

b)

False

38.

Arrows in a food chain indicate

a)

the size of the habitat

b)

the type of organisms

c)

the number of species

d)

the direction of energy flow

39.

Animals eat other organisms to obtain food. They then break down the food to get energy and rearrange the molecules of their food into new molecules. One of those molecules is carbon dioxide. How is carbon dioxide recycled back into the food chain?

a)

Carbon dioxide is recycled back into the food chain through photosynthesis in plants.

b)

Carbon dioxide is absorbed by animals during respiration.

c)

Carbon dioxide is converted into energy by fungi in the soil.

d)

Carbon dioxide is released by plants during photosynthesis.

40.

Which sentence correctly finishes the sentence:

energy____________, matter ___________

a)

energy flows, matter cycles

b)

energy cycles, matter flows

c)

energy is destroyed, matter created

d)

energy is created, matter is destroyed

41.

A region of savanna has 21,500 kg of grass. What mass of herbivores could be supported in this ecosystem? Use the Ten Percent rule to find your answer.

a)

21500 kg

b)

215 kg of grass

c)

2150 kg

d)

215 kg

42.

A tropical rainforest has 4,250 kcal of energy available at the tertiary level. What amount of energy is available at the herbivore level in this ecosystem? Use the Ten Percent rule to find your answer.

a)

425000 kcal

b)

4250 kcal

c)

425000 kcal

d)

4250 J

43.

Which of the following is not an example of an abiotic component of an ecosystem

a)

Rocks and minerals

b)

Water and air

c)

Sunlight and temperature

d)

Plants or animals

44.

Ecosystems involve organisms working with their surroundings to survive. There are multiple types of ecosystems, and each will have different balances and characteristics that make their organisms thrive.

Ecosystem interactions are often shown through food chains or food webs. Food webs are simply multiple food chains that interact together.

Big Bend National Park is located in the part of the Chihuahuan Desert that is in southwestern Texas. The table lists some of the types of animals that live in Big Bend and what they eat.

Based on the information in the table, which of the following food chains shows one way energy flows in the Big Bend ecosystem?

a)

juniper berries -> ornate boc turtles -> roadrunners -> rock squirrels

b)

grasses -> rock squirrels -> roadrunners

c)

cacti -> ornate box turtles -> turkey vultures

d)

mesquite beans -> turkey vultures -> roadrunners -> western rattlesnakes

45.

Which of the following is an example of consumers receiving energy directly from a producer?

a)

Plants use energy from the sun to make food.

b)

frogs and dragonflies

c)

snakes and eagles

d)

grasshoppers and butterflies

46.

Which model shows the carbon cycle?

a)

b)

c)

d)

47.

Explain how the relationship between predator (lynx) and prey (hare) affect population density.

a)

As the hare population rises, the lynx population rises which then causes the hare population to decline. This decline will lead to a decline in lynxes.

b)

As the hare population rises, the lynx population declines which then causes the hare population to decline. This decline will lead to a rise in lynxes.

c)

As the lynx population rises, the hare population rises which then causes the lynx population to decline. This decline will lead to a decline in hares.

d)

As the lynx population rises, the hare population remains steady which then causes the lynx population to decline. This decline will lead to a rise in hares.

48.

What type of interaction is the following?

The Cattle Egret forages in pastures and fields among livestock such as cattle and horses, feeding on the insects stirred up by the movement of the grazing animals. The livestock do not benefit.

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

e)

predation

49.

What type of interaction is the following?

Tapeworm living inside the intestines of an animal.

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

e)

predation

50.

What type of interaction is the following?

The Nile crocodile open its mouth to permit the Egyptian plover to feed on any leeches attached to its gums. The small bird gets to eat and the croc gets its teeth cleaned

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

e)

predation

51.

What type of interaction is the following?

Sea anemones trying to occupy the same territory in a tide pool

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

e)

predation

52.

What type of interaction is the following?

A lynx is attacking a hare.

a)

parasitism

b)

mutualism

c)

commensalism

d)

competition

e)

predation

53.

Moose first arrived at Isle Royale around 1900. The moose population tends to increase in years with mild winters, early spring green-up, abundant winter forage, low wolf numbers and low levels of tick infestation. Wolves first arrived at the island on an ice bridge from Canada in 1940. Between 1980 and 1982, the wolf population declined from 50 to 14, due to canine parvovirus.

What would happen to the moose population if the wolves were removed from the island?

a)

The moose population would likely decrease.

b)

The moose population would remain stable.

c)

The moose population would fluctuate unpredictably.

d)

The moose population would likely increase.

54.

Moose first arrived at Isle Royale around 1900. The moose population tends to increase in years with mild winters, early spring green-up, abundant winter forage, low wolf numbers and low levels of tick infestation. Wolves first arrived at the island on an ice bridge from Canada in 1940. Between 1980 and 1982, the wolf population declined from 50 to 14, due to canine parvovirus.

What happens to the wolf population when the moose population decreases?

a)

The wolf population migrates to other areas.

b)

The wolf population increases significantly.

c)

The wolf population decreases.

d)

The wolf population remains stable.

55.

Moose first arrived at Isle Royale around 1900. The moose population tends to increase in years with mild winters, early spring green-up, abundant winter forage, low wolf numbers and low levels of tick infestation. Wolves first arrived at the island on an ice bridge from Canada in 1940. Between 1980 and 1982, the wolf population declined from 50 to 14, due to canine parvovirus.

Identify TWO limiting factors that have likely influenced the wolf population in this area.

a)

age

b)

disease

c)

food supply

d)

climate

56.

What type of limiting factor are predator-prey relationships?

a)

Density Dependent

b)

Density Independent

57.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

Rainbow smelt and yellow perch attempt to occupy the same area. The more aggressive smelt survive: the perch do not.

a)

DD

b)

DI

58.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

Lake sturgeon migrate long distances and many do not survive the trip.

a)

DD

b)

DI

59.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

Since northern pike prey on yellow perch, an increase in the perch populations causes an increase in the pike population.

a)

DD

b)

DI

60.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

A population is growing quickly when parasites cause disease to spread quickly.

a)

DD

b)

DI

61.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

Due to over-fishing, the number of wall-eye in Lake Winnipeg decreases.

a)

DD

b)

DI

62.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

Many fish die due to an increase in water temperature.

a)

DD

b)

DI

63.

Lake Winnipeg is a shallow lake composed of two basins: a wide north basin and a narrow south basin that provides a habitat for over 50 different species of fish. The statements below involves a situation that will affect the growth of a population. Decide if it is DD (density dependent) or DI (density independent).

A severe flood brings a lot of silt and sediment into Lake Winnipeg. The turbidity of the lake increases greatly.

a)

DD

b)

DI

64.

Identify the type of dispersion pattern.

A bunch of mushrooms growing on a rotting log.

a)

Random

b)

Clumped

c)

Uniform

65.

Identify the type of dispersion pattern.

The sage plant secretes toxins, a chemical that kills off surrounding plants in a circle around the individual sage plants.

a)

Random

b)

Clumped

c)

Uniform

66.

Identify the type of dispersion pattern.

Dandelions have wind-dispersed seeds that germinate wherever they happen to fall in a favorable environment.

a)

Random

b)

Clumped

c)

Uniform

67.

Identify the type of dispersion pattern.

A herd of elephants gather around a watering hole.

a)

Random

b)

Clumped

c)

Uniform

68.

The two Paramecium species were grown alone then grown together in a culture. Based on the graphs, what can you conclude about the population density when they are grown separately?

a)

P. aurelia will thrive and have a higher population density.

b)

Both paramecium species will suffer and decline in population density.

c)

P. aurelia will thrive and have a higher population density.

d)

Both paramecium species will thrive and exhibit high population densities.

69.

When grown separately, what day did each P. aurelia reach its carrying capacity? (Estimate to the closest line)

a)

5

b)

8

c)

10

d)

16

70.

When grown separately, what day did each P. caudatum reach its carrying capacity? (Estimate to the closest line)

a)

5

b)

8

c)

10

d)

16

71.

What is carrying capacity?

a)

Carrying capacity is the maximum population size that an environment can sustain indefinitely.

b)

Carrying capacity is the average lifespan of a species in an ecosystem.

c)

Carrying capacity is the number of species that can coexist in one habitat.

d)

Carrying capacity refers to the total area of land available for wildlife.

72.

What happens to a population when they exceed their carrying capacity?

a)

It starts to grow exponentially

b)

It starts to grow logistically

c)

It doesn't grow, but dies.

73.

What is the carrying capacity of the deer population on Walla Walla Island?

a)

98-99

b)

79-80

c)

18-19

d)

60

74.

Is it logistic growth, exponential growth, or both?

no limiting factors present

a)

Logistical

b)

Exponential

c)

Both

75.

Is it logistic growth, exponential growth, or both?

takes place when a species takes over an uninhabited area

a)

Logistical

b)

Exponential

c)

Both

76.

Is it logistic growth, exponential growth, or both?

Takes place when an ecosystem eventually runs out of resources

a)

Logistical

b)

Exponential

c)

Both

77.

Elements C, H, O - simple sugars like starch and glucose

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

78.

Elements C, H, O, N, S - amino acids, insulin, keratin (hair)

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

79.

Elements C, H, O - fatty acids and glycerol. Fats, oils, and waxes

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

80.

Elements C, H, O, N, P - nucleotides, makes up DNA

a)

lipids

b)

carbohydrates

c)

proteins

d)

nucleic acids

81.

Biodiversity is

a)

the study of animal behavior in the wild

b)

the impact of climate change on weather patterns

c)

the variety of life in a particular habitat or ecosystem

d)

the process of photosynthesis in plants

82.

Letter A represents the

a)

predator

b)

prey

83.

Letter B represents the

a)

predator

b)

prey

84.

As the prey population increases, the predator population

a)

increases

b)

decreases

85.

Water has the ability to dissolve almost anything. What property is this?

a)

polar molecule

b)

density of ice

c)

capillary action

d)

universal solvent

86.

Water has the ability to climb trees. What property is this?

a)

polar molecule

b)

density of ice

c)

capillary action

d)

universal solvent

87.

Water has the ability to float when frozen. What property is this?

a)

polar molecule

b)

density of ice

c)

capillary action

d)

universal solvent

88.

Water has both a positive hydrogen side and negative oxygen side. What property is this?

a)

polar molecule

b)

density of ice

c)

capillary action

d)

universal solvent

89.

The evolution of a body of water from a lake to a marsh can last for thousands of years. The water level of Lake Michigan was once 18 meters higher than it is today. As the water level fell, land was exposed. Many small lakes or ponds were left behind where there were depressions in the land. Examine the pictures decide which picture is the youngest.

a)

b)

c)

d)

90.

The evolution of a body of water from a lake to a marsh can last for thousands of years. The water level of Lake Michigan was once 18 meters higher than it is today. As the water level fell, land was exposed. Many small lakes or ponds were left behind where there were depressions in the land. Examine the pictures decide which picture is the oldest.

a)

b)

c)

d)

91.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Soil already present

a)

primary

b)

secondary

c)

both

92.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Dead trees cause by forest fire

a)

primary

b)

secondary

c)

both

93.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Glaciers and volcanoes

a)

primary

b)

secondary

c)

both

94.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Soil development occurs

a)

primary

b)

secondary

c)

both

95.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Forest fire or floods

a)

primary

b)

secondary

c)

both

96.

There are two different types of succession: primary and secondary. Is the following, secondary, primary, or both?

Takes the longest time

a)

primary

b)

secondary

c)

both

97.

Aerobic and anaerobic respiration are both processes cells use to release energy from __________ , but they differ in important ways.

a)

ATP

b)

lactic acid

c)

glucose

d)

aerobic

e)

anaerobic

98.

__________ respiration requires oxygen and produces a large amount of energy.

a)

ATP

b)

lactic acid

c)

glucose

d)

aerobic

e)

anaerobic

99.

_____________ respiration, on the other hand, does not use oxygen and produces much less energy—only about 2 ATP per glucose.

a)

ATP

b)

lactic acid

c)

glucose

d)

aerobic

e)

anaerobic

100.

It happens in some bacteria and in human muscles during intense exercise when oxygen runs low, causing ____________ to build up.

a)

ATP

b)

lactic acid

c)

glucose

d)

aerobic

e)

anaerobic

101.

Which of the following best explains the process of chemosynthesis?

a)

Chemosynthesis is the process of converting inorganic compounds into organic matter using chemical energy.

b)

Chemosynthesis is the conversion of chemical energy into heat energy.

c)

Chemosynthesis is the process of photosynthesis using sunlight.

d)

Chemosynthesis involves the breakdown of organic matter into inorganic compounds.

102.

Which of the following is a true statement about the role of chlorophyll in photosynthesis?

a)

Chlorophyll releases oxygen during photosynthesis.

b)

Chlorophyll is a byproduct of photosynthesis.

c)

Chlorophyll converts carbon dioxide into glucose.

d)

Chlorophyll absorbs light energy necessary for photosynthesis.

103.

What is the main purpose of cellular respiration?

a)

To break down proteins for energy production.

b)

To facilitate photosynthesis in plants.

c)

To convert glucose into usable energy (ATP) for the cell.

d)

To store energy in the form of glucose.

104.

How do photosynthesis and cellular respiration play a role in the carbon cycle?

a)

Both processes only occur in plants and do not affect the carbon cycle.

b)

Photosynthesis produces CO2, while cellular respiration absorbs CO2, impacting the carbon cycle.

c)

Photosynthesis removes CO2 from the atmosphere, while cellular respiration releases CO2, thus both processes are crucial in the carbon cycle.

d)

Photosynthesis and cellular respiration are unrelated to the carbon cycle.

105.

In cellular respiration, what role does the mitochondrion play?

a)

The mitochondrion produces ATP through cellular respiration.

b)

The mitochondrion synthesizes proteins for the cell.

c)

The mitochondrion absorbs oxygen for respiration.

d)

The mitochondrion stores glucose for energy.

106.

Which 2 letters show CO2 being added to the river?

a)

A

b)

B

c)

D

d)

E

e)

C

107.

Which 2 letters show CO2 being taken out of the river?

a)

A

b)

B

c)

D

d)

E

e)

C

108.

How much carbon ends up in C?

a)

.55

b)

1

c)

6

d)

.25

109.

Ducks have a gland near their tail called a uropygial gland. This gland produces preen oil that serves a number of functions, including waterproofing their feathers. Preen oil consists of lipids such as diester waxes. A duck is omnivorous and its diet consists of small fish, grass, and algae. Which one shows the correct sequence?

a)

Grass absorbs light energy - Grass makes sugar - duck eats grass - duck turns sugar into lipid - duck makes preen oil

b)

Grass makes sugar - duck turns sugar into lipid - duck makes preen oil

c)

Grass absorbs light energy - Grass makes sugar - Duck turns sugar into lipid - Duck makes preen oil

d)

Grass absorbs light energy - grass makes sugar - duck gets preen oil from grass

110.

Most bees consume nectar from flowers, but queen bees eat a substance called royal jelly, which is secreted by other bees in the hive. Royal jelly contains numerous proteins as well as a substance known as queen bee acid. Which answer shows the correct sequence of how royal jelly is made?

a)

Plants absorb CO2 - Plants produce sugar - Bees consume sugar - Sugar molecule are rearranged to make queen acid - bees excrete royal jelly

b)

Plants produce sugars - Bees consume sugar - bees make sugar - bees excrete royal jelly

c)

Plants absorb CO2 - Plants produce sugar - Bees consume queen acid from plants - bees excrete royal jelly

d)

Plants absorb CO2 - Plants make sugar - Plants make queen acid - Bee consume queen acid from plants - Bees excrete royal jelly

Fall 2025 Semester Exam Review

Total questions: 110

Worksheet time: 1hrs 2mins

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