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Worksheets7th Grade Final Exam Study Guide
Total questions: 200
Worksheet time: 2hrs 40mins
What is the process where producers use carbon dioxide, water, and light energy to make
sugars?
Calvin cycle
Chemosynthesis
energy conversion
photosynthesis
What is the source of almost all energy on Earth?
atmosphere
soil
the Sun
water
What does the diagram illustrate?
an ecosystem
an energy pyramid
a food chain
a food web
What is an example of a biotic factor?
animals
atmosphere
climate
soil
If more greenhouse gases are released into the atmosphere, what is likely to happen?
an increase in the amount of carbon in the soil
an increase in the amount of nitrogen in the soil
a decrease in average temperatures on Earth
an increase in average temperatures on Earth
In the nitrogen cycle, what converts nitrogen compounds into nitrogen gas?
animals
bacteria
lightning
plants
What is this diagram an example of?
consumer model
food chain
food web
producer model
Which includes both an abiotic and a biotic factor?
a cow eating grass
a dog giving birth to puppies
a lion drinking from a river
a rock rolling down a hill
What is water that falls from clouds to Earth’s surface?
condensation
evaporation
glaciers
precipitation
What process is shown in this figure?
decay
nitrogen fixation
photosynthesis
transpiration
A puddle is formed after a rainstorm. After two days of sunshine, the puddle disappears.
What happened to the water?
It became a biotic factor.
It went through chemosynthesis.
It oxidized.
It evaporated.
__________ describes the weather patterns that affect a region over a long period of time.
Community
Climate
Succession
Weather
Which is a fossil fuel?
nuclear power
oil
wind
wood
Earth’s early atmosphere probably did not contain oxygen gas. Scientists believe that
__________ are responsible for producing most of the oxygen in Earth’s early atmosphere.
fish
bacteria
plants
dinosaurs
Without this, Earth could become too hot or cold to support life as we know it.
geothermal energy
the greenhouse effect
the ozone layer
global warming
Why do many people feel that slowing our use of fossil fuels would slow global warming?
Fossil fuels produce smog in the atmosphere.
Mining fossil fuels produces heat.
Fossil fuel use damages the ozone layer.
Burning fossil fuels produces CO2, a greenhouse gas.
Which of these is an abiotic factor?
a raccoon
a pine tree
sunlight
a beetle
Which of these is part of the nitrogen cycle?
Nitrogen is removed from soil by animal wastes.
Nitrogen is absorbed by plants when they die.
Nitrogen compounds fall to the ground when it rains.
Nitrogen is produced by plants as a byproduct of photosynthesis.
Where would you find organisms that produce food by chemosynthesis?
in a deep part of the ocean
in desert biomes
in deciduous rain forest biomes
in treetops
One possible result of increased carbon dioxide in the atmosphere is __________.
an increase in the number of carnivores on Earth
a rise in average temperatures on Earth
a decrease in the amount of water on Earth
a decrease in the amount of nitrogen in the soil
Which of these is the correct order of a food chain?
A rabbit is eaten by a wolf, which is eaten by grass.
A wolf is eaten by grass, which is eaten by a rabbit.
Grass is eaten by a rabbit, which is eaten by a wolf.
A rabbit is eaten by grass, which is eaten by a wolf.
Which of these organisms is the first step in a food chain?
producers
mammals
consumers
amphibians
Features of the environment that are or were once alive are called __________.
biotic factors
abiotic factors
food webs
nitrogen cycles
The gases that surround Earth are called __________.
the core
respiration
the atmosphere
humus
What is the source of most energy on Earth?
air
soil
the Sun
water
Which is a biotic factor in an ecosystem?
a plant living near a stream
the amount of rainfall
the angle of the Sun
the types of minerals present in soil
Which organism might you expect to find at trophic level I?
fox
frog
grass
grasshopper
Which includes an abiotic and a biotic factor?
a chicken laying an egg
a deer drinking from a stream
a rock rolling down a hill
a squirrel eating an acorn
Which process helps keep temperatures on Earth from becoming too hot or too cold?
condensation
global warming
greenhouse effect
nitrogen fixation
During the carbon cycle, __________ take in carbon dioxide from the atmosphere.
animals
consumers
decomposers
plants
Which is true of the amount of matter in ecosystems?
It decreases over time.
It increases over time.
It remains constant.
Scientists cannot determine how it changes.
Which process is occurring at the location indicated by the arrow?
condensation
nitrogen fixation
precipitation
transpiration
Which best represents a food chain?
Sun – rabbit – fox – grass
Sun – grass – rabbit – fox
fox – grass – rabbit – Sun
grass – rabbit – fox – Sun
A person who ate a salad made of lettuce, tomatoes, cheese, and ham is a(n) __________.
carnivore
not a vegan
herbivore
omnivore
Earth's surrounding atmosphere is part of its __________.
biosphere
food chains
niche
population
Which organisms in this ocean habitat are considered the consumers?
fish and seaweed
fish and sharks
algae and seaweed
coral and seaweed
The organisms living in an area and the nonliving features of that environment form
__________.
an ecosystem
competition
a symbiotic relationship
its limiting factors
All the tortoises living in a specific region of a desert ecosystem make up what?
a biosphere
a carrying capacity
a food chain
a population
Which food chain can be found in this environment?
rabbit – coyote -snake
plants – coyote – snake
plants – rabbit – coyote
plants – snake- rabbit
The largest number of organisms from a particular species that can live in an ecosystem at
one time is the __________ for that species in that ecosystem
symbiosis
carrying capacity
commensalism
sample count
What term refers to the place a species occupies within an ecosystem?
food chain
niche
habitat
biosphere
Which of these organisms is a producer?
fern
snake
bear
trout
Your sick puppy is diagnosed with roundworms. What type of symbiotic relationship do the
puppy and the roundworms have?
parasitism
commensalism
mutualism
cooperative
Based on the graph, what was the increase in human population between 1750 and 2000?
3 billion
4 billion
5 billion
11 billion
What are consumers that capture and eat other consumers called?
herbivores
predators
food chains
producers
Compared to a carnivore, what advantage does an omnivore have?
An omnivore is also able to consume only plants.
An omnivore is generally faster.
There is no advantage.
An omnivore is able to consume both plants and animals.
A student drew lines on this figure indicating interactions among organisms. What does this
altered figure represent?
food chain
commensalism
food web
habitat
Which of Earth's oceans are included in the biosphere?
all oceans
Atlantic and Pacific Oceans
Indian and Pacific Oceans
Arctic Ocean
Which of the following items have helped increase the carrying capacity of the environment
for human populations?
medical care and vast oceans
food, medical care, and sanitation
large deserts and clearing rainforests
food, sanitation, and increased carbon dioxide in the atmosphere
What is required for a species to experience exponential growth?
hostile conditions, unlimited resources
limited resources, ideal conditions
bacteria
ideal conditions, unlimited resources
This figure is an example of which type of interaction in an ecosystem
food web
food chain
mutualism
competition
Which fact is correct about most food chain?
Consumers will always depend on producers for food
Consumer and producers belong to completely unrelated food chains.
Producers always depend on consumers for food.
Ecological problems are reduced by establishing a clear food chain order.
Based on the graph, what happens to a population as it reaches the carrying capacity of an
ecosystem.
Population continues to increase.
Population will decrease.
Population will rise slowly then increase in the rate of increase.
Population increases then remains constant.
What is most likely to happen to an overpopulated species?
The population will start to grow exponentially
Competition among members of the species will increase.
Birthrates will further increase, the death rates will decrease.
They will become extinct.
Why is it impossible for any species to reach their biotic potential?
Reaching biotic potential would require the extinction of all other species.
Humans will reach their full biotic potential once the global population numbers 15 billion
people.
As long as there are too many producers the biotic potential cannot be reached.
No ecosystem possesses unlimited resources and no limiting factors, which would be required for
a species to reach the biotic potential.
In a particular area, a species is considered endangered if there are less than 800 individuals
left. Based on the chart, which species would be considered endangered?
eagles, darter fish, and tree toads
eagles and may flies
tree frogs and loose strife
loose strife and may flies
What are all organisms of the same species occupying the same area at the same time known
as?
community
population
species
inhabitants
This figure is an example of which type of interaction in an ecosystem?
competition
food web
food chain
mutualism
What is a reason for migration?
predators recently moving into an area
seasonal change
changes in the life cycle
changes in food levels
What does the line indicated by the red arrow in the graph below represent?
competition
biotic potential
carrying capacity
limiting factors
The need for organisms to rely on the same resources causes __________.
competition
biotic potential
carrying capacity
population growth
The number of organisms in a specific area is __________.
a community.
the carrying capacity.
the population density.
the population growth.
The number of robins that hatch in a year is the population’s __________.
biotic potential
birthrate
carrying capacity
exponential growth
A robin population that reaches its biotic potential probably shows __________.
exponential growth
low growth
negative growth
no growth
An organism that uses sunlight to make food molecules is a(n) __________.
carnivore
consumer
herbivore
producer
Which is NOT part of Earth’s biosphere?
low atmosphere
surface of the Moon
bottom of the Pacific ocean
North American continent
Which is a limiting factor for a cottontail rabbit population on the prairie in Oklahoma?
a large amount of food
a large amount of shelter space
an abundance of coyotes in the area
an unpolluted river in the ecosystem
Which factor does NOT normally affect human population size?
birthrate
death rate
population movement
lack of resources
What type of overall population change is shown below?
immigration
migration
population decrease
population increase
Which are usually shallow and filled with an abundance of plant and animal life?
ponds
oceans
rivers
lakes
Which biome is characterized by the coldest temperatures?
tundra
grassland
temperate deciduous forest
taiga
The average weather conditions affecting a biome is called ____.
temperate condition
precipitation
tundra
climate
The first organisms to appear during ecological succession are called ____.
succession plants
pioneer species
climax communities
primary organisms
Which of these animals might be found living in a taiga?
moose
kangaroo rat
zebra
lizard
What biome is found at the farthest north latitudes?
grassland
tundra
temperate rain forest
estuaries
Warm temperatures and large amounts of rainfall characterize which biome?
desert
tundra
temperate grassland
tropical rainforest
Why are parts of Antarctica considered to be a desert?
These areas are known for very large snow storms.
It is hot during the day and cold at night in these areas.
There are only small trees and penguins in these areas.
The areas receive less than 5 cm of precipitation per year.
Which plant is typically found in grasslands?
rice
corn
cactus
moss
What types of organisms would be found in this stage of primary succession?
moss and lichens
grasses
trees
shrubs and low plants.
Primary succession begins in an area without __________.
air
wind
sunlight
soil
Which is a forest biome consisting mostly of cone-bearing evergreen trees?
taiga
desert
temperate deciduous forest
tundra
What evidence is there that figure B shows the climax community in this example of
succession?
The sky is a darker color.
There are dead trees in the forest, but new trees are growing, so the forest community is stable.
There are more trees in figure b than in figure A.
There are more pines and other evergreen trees.
After a house is torn down, the land it stood on begins to have grass and weeds. What is this
an example of?
eutrophication
climax community
secondary succession
primary succession
What is a pioneer species?
the last species to evolve
the first species to evolve
the first species that colonize new or undisturbed land
the first species that can be used for food for humans
Which ecosystem is represented in this image?
coral reef
estuary
deep ocean
freshwater biome
How do fertilizers used on farms speed up pond succession?
by adding dissolved oxygen to the water
by adding nutrients to the water causing faster growth of plants
by causing fish to produce a greater number of offspring
by removing oxygen from the water
Prairie, savanna, and meadow are other names for which biome?
taiga
tundra
desert
grassland
Which land biome is represented in the picture?
tropical rainforest
grassland
temperate deciduous forest
tundra
Which biome has permafrost?
taiga
tundra
desert
tropical rain forest
Why are lichens consider to be pioneer species?
They are the first species to colonize new or undisturbed land.
They finish transforming the landscape after succession has stopped.
They are the first species to move into an existing community during secondary succession.
They always make up a climax community.
Which biomes are most often found near the equator?
desert and rain forest
grasslands and tropical rain forest
desert and grasslands
temperate rain forests and taiga
How is an ecosystem related to a biome?
There is no difference between a biome and an ecosystem.
Ecosystems are divisions of biomes with various species of plants and animals.
Biomes are divisions of ecosystems with all the same kinds of plants.
Man can destroy and ecosystem, but the biome will remain the same.
In which water ecosystem does saltwater and freshwater mix?
estuary
lake
pond
river
Where would you find plants with stems that can store large amounts of water?
desert
grassland
taiga
tundra
What does the pink area on the map below represent?
taiga
tundra
temperate deciduous forest
temperate rainforest
Where would you find trees that have no leaves during the winter?
estuary
tundra
temperate deciduous forest
temperate rainforest
Which biomes have rich, fertile soil?
grassland and taiga
grassland and tundra
grassland and tropical rainforest
grassland and temperate deciduous forest
Which is NOT a freshwater ecosystem?
oceans
ponds
rivers
streams
Where would you find species adapted to withstand strong wave action?
estuaries
wetlands
intertidal zone
twilight zone
Which ecosystem has flowing water?
estuary
lake
stream
wetland
Which ecosystems help protect coastal areas from flood damage?
estuaries
ponds
rivers
streams
Which organism below would be the first to settle an area that has been buried in lava?
shrubs
lichen
weeds
ferns
What is a forest called that has had the same species of trees for 200 years?
climax community
pioneer species
primary succession
secondary succession
What is eutrophication?
decreasing nutrients
decreasing salinity
increasing nutrients
increasing salinity
Which of these is true?
Instinctive behaviors can take a period of time to complete.
Instinctive behaviors happen instantly.
Animals are not born with instinctive behavior.
An instinctive behavior is the result of conscious thinking.
A gosling follows a goose shortly after hatching, and from that point on considers that goose
its parent. What is this an example of?
reflex action
conditioning
imprinting
regeneration
In order to learn to throw a ball easily, you have to practice this skill over and over. What
type of learned behavior is this?
imprinting
instinct
trial and error
conditioning
Your math teacher assigns questions that you've not worked on before. You solve them by
remembering similar problems. What type of behavior are you using?
cognitive behavior
trial and error
reflex behavior
hibernation
Which of these is a reflex action?
chewing
yawning
running
writing
Bioluminescence is one form of __________.
cell replication
food processing
protecting a territory
light communication
Which is a chemical that an animal produces to influence the behavior of another animal of
the same species?
phosphorus
pheromone
phylum
philosophy
Gray whales swim to warm waters off of Mexico from their cold arctic water homes. What
instinctive behavior is this an example of?
estivation
migration
pheromones
bioluminescence
Which of these is an example of aggressive behavior?
A queen termite lives with worker termites.
A bear marks a tree trunk with claw marks and scent marks.
Two male deer lock antlers in a struggle.
A spider spins a large web.
A peacock spreads its tail feathers and walks around with its bright feathers held high. What
is this an example of?
courtship behavior
trial and error
hibernation
imprinting
The cell that is formed when fertilization occurs is called __________.
ladder
cytoplasm
zygote
mutation
In some fish, egg and sperm join inside the female's body. This is called __________.
spawning
hatching
external fertilization
internal fertilization
Metamorphosis is a part of what process in amphibians?
development
reproduction
respiration
circulation
Which of these describes how mammals reproduce?
through budding
through regeneration
through sexual reproduction
through asexual reproduction
Which of these is an organ in the female reproductive system?
the egg
the ovary
the semen
the testes
Which best describes a gosling's response to the stimulus shown here?
learned
conditioned
imprinting
innate
A cat comes running at the sound of a can opener in the kitchen. What kind of learning is
this?
imprinting
conditioning
trial and error
cognitive
Which statement is true?
Many behaviors help animals maintain homeostasis.
Innate behavior does not help an animal maintain homeostasis.
Only responses to external stimuli help an animal maintain homeostasis.
Behavior does not affect homeostasis.
If these three images represent the body language of three wolves in the same pack, which
statement is most likely to be true?
Wolf A is dominant over Wolf B.
Wolf A is dominant over Wolf C.
Wolf C is dominant over Wolf A.
Wolf C is dominant over Wolf B.
A male tern brings a fish to a female tern. What kind of behavior is this?
territory defense
submission
aggression
courtship
How is pheromone communication different from bioluminescence?
only pheromone communication uses chemicals
only pheromones can be used for courtship
only pheromones cannot be seen
only pheromones can be used to communicate with individuals of the same species
Two squirrels have an aggressive interaction. Which outcome is most likely?
neither of them feels stress
they both get badly injured
neither one gets seriously hurt
one of them kills the other
Which process is illustrated in this image?
fertilization
gestation
pupation
metamorphosis
What happens at the end of gestation?
an egg leaves the ovary
an embryo leaves the mother's body
a zygote is formed
a developing animal's body changes from one form to another
Which of these best describes metamorphosis?
it is a developmental process
it requires internal fertilization
it is a type of communication
it is a learned behavior
Which is a reflex?
a bird building a nest
pulling a string to get food
pupils getting smaller in dim light
tying your shoelaces
Which animal does NOT hibernate?
bat
chipmunk
snake
squirrel
Which type of animal behavior is shown in the figure below?
conditioning
imprinting
instinct
reflex
Which is a learned response that uses reasoning from past experiences?
conditioning
imprinting
cognitive behavior
trial and error
Body language is an example of __________.
communication
conditioning
migration
societies
Which type of behavior is shown in Wolf A?
aggression
courtship
migration
submission
How would you describe the organ system shown below?
asexual
embryo
female
male
What is the length of time between fertilization and birth called?
external development
gestation period
metamorphosis
zygote
What are the reproductive cells that form in male animals?
eggs
ovaries
sperm
sperm
The outer layer of skin is called the__________.
glands
perspiration
pigment
epidermis
One function of your skin is to make __________.
vitamin D
bile
energy
bone marrow
Which of these is NOT a layer of skin?
epidermis
dermis
melanin
fatty layer
What vitamin is made in the skin?
A
B
D
K
__________ release waste products from the body.
Spongy bones
Skeletal muscles
Sweat glands
Cartilage
What do bones protect?
hair
organs
skin
taste
Which is NOT a function of skin?
calcium production
protection
response to stimuli
temperature regulation
Which is an example of an involuntary muscle action?
talking
smiling
heart pumping
walking
Where can smooth muscles NOT be found?
stomach
large intestines
heart
esophagus
The kidneys are part of this system that helps to remove wastes and regulates fluid:
The kidneys are part of this system that helps to remove wastes and regulates fluid:
excretory
digestive
lymphatic
Which organ contains acid to aid in digestion of food?
small intestine
esophagus
anus
stomach
The diaphragm is an organ that belongs to which system?
respiratory
digestive
circulatory
skeletal
The largest organ in the human body is __________.
muscle
skin
brain
bone
Messages are carried back and forth between the brain and other parts of the body by the
__________.
muscle
skin
nerves
bone
Which of the following is a function of the digestive system?
obtaining oxygen
regulating body temperature
breaking down food so the body can use it
guarding against infection and injury
Which of the following of the circulatory system?
transport oxygen
provide shape and support for the body
store minerals
guarding against infection and injury
After you breathe air into your lungs, oxygen from the air goes into your __________.
heart
muscles
bones
bloodstream
The process by which an organism’s internal environment is kept stable is called
__________.
healing
digestion
homeostasis
respiration
What substance in the mouth contains an enzyme that begins chemical digestion?
fiber
mucus
hormones
saliva
The energy your body needs comes from __________.
food
water
bones
fiber
Needed substances are carried to the body cells by __________.
food
water
bones
blood
Which of these heart structures prevents blood from flowing backward?
aorta
valve
septum
coronary artery
Part of the respiratory system divided into smaller and smaller tubes resembling tree
branches:
pharynx
trachea
bronchi
diaphragm
The role of the respiratory system is to bring what substance into the body?
water
oxygen
carbon dioxide
red blood cells
strong, flexible tissue that covers the ends of bones
ligament
tendon
joint
cartilage
Connects bones to each other
ligament
tendon
joint
cartilage
Connects muscle to bones
ligament
tendon
joint
cartilage
Place where bones meet
ligament
tendon
joint
cartilage
What is the function of the structure shown enlarged on the right side of the picture?
performs peristalsis
absorbs nutrients in small intestine
releases amylase
releases bile
What organ removes excess water, salts, and other wastes from your blood?
kidney
brain
heart
bladder
Enzymes are an important part of _______ digestion.
molecular
chemical
esophageal
mechanical
What are the substances in food that provide for cell development, growth, and repair?
nutrients
organic materials
inorganic materials
acids
Which of these is the correct sequence of the organs of the digestive tract?
esophagus, mouth, stomach, small intestine, large intestine
mouth, small intestine, stomach, large intestine
mouth, stomach, esophagus, small intestine, large intestine
mouth, esophagus, stomach, small intestine, large intestine
Which food group contains yogurt and cheese?
meat
dairy
bread
fruit
Which of these organs produces bile for fat breakdown?
liver
pancreas
small intestine
gallbladder
The _________ is an elastic, muscular organ that holds urine until it leaves the body.
nephron
ureter
bladder
urethra
What is a type of protein that helps chemical reactions occur in your body?
enzyme
fat
mineral
vitamin
From the figure, which letter sequence shows the path of food through the digestive system?
A, G, C, H, D, F - mouth, salivary glands, liver, stomach, gallbladder, rectum
B, C, H, I, E, F - esophagus, liver, stomach, pancreas, large intestine, rectum
A, B, H, J, E, F - mouth, esophagus, stomach, small intestine, large intestine, rectum
A, H, I , J , E, F - mouth, stomach, pancreas, small intestine, large intestine, rectum
What is the purpose of the folds in the stomach?
to expand and hold food
to grumble and rumble when a person is hungry
to take up less room in the body
to digest food faster
Which part of the digestive system returns water to the body after food is digested?
liver
stomach
pancreas
large intestine
What structures lining the inside of the small intestine provide a place where nutrients can
pass to the blood?
villi
convolutions
folds
bile ducts
Which body system moves materials throughout your body?
the circulatory system
the skeletal system
the reproductive system
the endocrine system
Which of these is the largest artery in the human body?
the capillary
the platelet
the antigen
the aorta
Which organ of the body has the internal structures shown in the figure.
heart
thymus gland
lungs
capillaries
__________ carry blood away from the heart.
lungs
platelets
fibrin
arteries
What is the function of cilia that line the nasal cavity?
trap dust from the air
moisten the air taken in
sweep away mucus and trapped materials
produce sticky mucus
Which of these fights invaders of your body?
lymphocytes
diastolic pressure
white blood cells
inferior vena cava
Which one of the following is the correct pathway of air after it enters the nasal passages?
larynx, trachea, pharynx, bronchi, lungs
lungs, bronchi, trachea, larynx, pharynx
pharynx, larynx, trachea, bronchi, lungs
larynx, pharynx, bronchi, trachea, lungs
Which of these is a condition related to blood clotting?
hemophilia
atherosclerosis
stroke
diffusion
Tissue fluid not absorbed by the capillaries will be absorbed by which vessels?
veins
muscles
arteries
lymph vessels
What is the process that is shown in the figure?
respiration
circulation
excretion
breathing
Which of these is a function of blood?
digest food
produce wastes
transport nutrients
dissolve bone
What is the network of arteries and veins supplying blood to the heart?
arterial circulation
lymphatic circulation
capillary system
coronary circulation
structures on this figure is labeled with the letter D?
spleen
kidney
lymph node
thymus
How does the structure of alveoli affect their ability to exchange gases?
The thick walls and large surface area enables a higher rate of gas exchange.
Their small size allows for rapid contraction.
The thin walls and large surface area enables a higher rate of gas exchange.
The thin walls and large surface area allow fluids to pass.
From the chart, viruses and bacteria are the cause of which respiratory disease?
emphysema
pneumonia
lung cancer
asthma
What is the difference between veins and arteries?
Veins bring blood towards the heart. Arteries carry blood away from the heart.
Veins are part of the lymph system. Arteries are part of the pulmonary system
Arteries bring blood to the heart. Veins carry blood away from it.
Arteries are capillaries. Veins are blood vessels.
Why is it important to avoid atherosclerosis?
Atherosclerosis can lead to heart attack or stroke.
Atherosclerosis can lead to sickle cell anemia.
Atherosclerosis can cause lung cancer.
Atherosclerosis can cause lymphoma.
How does lymph move through lymph vessels?
Lymph is pumped by the heart.
Lymph is moved by muscles.
Lymph is pushed by red blood cells.
Lymph is moved by air pressure.
Recycling red blood cells is the function of which organ?
kidneys
tonsils
heart
spleen
What structures are labeled E?
spleen
spleen
thymus
lymph nodes
Which answer is NOT a circulatory system of the body?
Coronary circulation
Systolic circulation
Pulmonary circulation
Systemic Circulation
