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WorksheetsScience 8 Final Exam Review 2019
Total questions: 177
Worksheet time: 3hrs 0mins
The diagram shows a cell.
This cell would be found in which type of organism?
animals
fungi
viruses
plants
Tissue is composed of a group of
similar cells working together
different organs working together
organ systems working together
nuclei in a cell working together
To provide energy for the work that cells do, all cells need
chloroplasts
nutrients
atmospheric nitrogen
carbon dioxide
Cells are to tissues as tissues are to
microbes
organs
systems
bacteria
In a one-celled organism, cell division is responsible for
growth and maintenance
sexual reproduction
asexual reproduction
production of sex cells
Base your answers to the question on the diagram and on your knowledge of science. The diagram shows a cell with some basic cell structures labeled. Which two structures labeled in the diagram, other than the large vacuole, that indicate this cell is a plant cell.
Cell wall and chloroplast
Cytoplasm and cell wall
Cell membrane and nucleus
Nucleus and chloroplast
Base your answers to question on the diagram and on your knowledge of science. The diagram shows a cell with some basic cell structures labeled. Which hereditary material in the nucleus of the cell is responsible for passing traits on to the next generation?
Cell wall
DNA
Cytoplasm
Vacuole
Growth and repair in multicellular organisms are the result of
excretion
locomotion
cell division
decomposition
Base your answers to on the diagram of a cell and on your knowledge of science. Some of the cell structures are labeled. Which two structures are found in plant cells, but not in animal cells?
Cell membrane and nucleus
Cell Wall and Chloroplast
Vacuole and nucleus
Cytoplasm and nucleus
The drawings show four animals.
What do all four animals have in common?
They reproduce asexually.
They are composed of cells.
They have similar means of locomotion.
They have the same internal structures.
Which sequence correctly shows the levels of organization for structure and function in a human?
cell -> tissue -> organ -> organ system
organ system -> cell -> tissue -> organ
tissue -> organ -> organ system -> cell
cell -> organ -> tissue -> organ system
In animal skin tissue, cell division is responsible for
growth and repair
sexual reproduction
obtaining energy
production of sex cells
Base your answers to question on the diagrams and key and on your knowledge of science. The diagrams show two cells and some of their structures Which structure shown in the plant cell diagram is the site of photosynthesis?
Nucleus
Chloroplast
Cytoplasm
Cell wall
Base your answers to question on the diagrams and key and on your knowledge of science. The diagrams show two cells and some of their structures Which cell structure shown in the diagrams contains genetic material?
Cell wall
Nucleus
Cytoplasm
Vacuole
Base your answers to question on the diagrams and key below and on your knowledge of science. The diagrams show two cells and some of their structures. What are two structures that are found in both plant and animal cells.
Nucleus and vacuole
Cytoplasm and cell wall
Cell wall and chloroplast
Chloroplast and cytoplasm
Which structure is found in a plant cell but not in an animal cell?
cell wall
cell membrane
cytoplasm
nucleus
The diagram shows a human organ system.
Which human organ system is shown?
nervous
digestive
circulatory
respiratory
The chart shows the major function of three different human organ systems.
What human organ system is A?
Circulatory
Digestion
Reproduction
Respiration
The chart shows the major function of three different human organ systems.
What human organ system is B?
Circulatory
Digestion
Reproduction
Respiration
The chart shows the major function of three different human organ systems.
What human organ system is C?
Circulatory
Digestion
Reproduction
Respiration
Which human organ system produces sperm or egg cells?
digestive system
nervous system
respiratory system
reproductive system
Cancer is best described as
a type of genetic engineering
the merging of sex cells
abnormal cell division
tissue that stops growing
Which human organ system eliminates liquid and gaseous wastes from the body?
circulatory
endocrine
excretory
reproductive
The diagram shows a human arm bending at the elbow.
Which two body systems most directly cause the arm to bend?
skeletal and muscular
reproductive and endocrine
respiratory and excretory
nervous and digestive
Which three systems of the human body function together to move and control body parts?
nervous, skeletal, and muscular
muscular, endocrine, and excretory
digestive, excretory, and reproductive
circulatory, endocrine, and respiratory
In sexual reproduction, what fraction of genes does each parent contribute to the offspring?
1/2
3/4
1/4
1/8
The diagram shows a model of human
inheritance.
The parent whose genes are aa
must be dominant
has a straight hairline
has a peaked hairline
may have AA offspring
The diagram shown is called a
Punnett square
Pedigree chart
Dichotomous key
Flowchart
Each body cell of a goldfish contains 94 chromosomes. How many chromosomes are contained
in a goldfish sex cell?
23
47
94
188
What are genes composed of?
offspring
DNA
cells
traits
Which term identifies a single unit of hereditary information?
egg cell
sperm cell
nucleus
gene
A Punnett square is shown. The dominant trait is represented by R. The recessive trait is represented by r. What percentage of the offspring will most likely show the dominant trait?
25%
50%
75%
100%
Two pea plants with green pods, Gg X GG, were crossed. Which Punnett square below shows the results of this cross?
What percentage of the offspring produced by this cross will most likely have green pods?
25%
50%
75%
100%
The eyes of the owl and the rabbit shown in the diagram give each animal a different advantage. The front-facing owl eyes allow the bird to accurately judge distance when swooping in on prey. The side-facing rabbit eyes allow the animal to detect the motion of possible predators. The specialized eye types of these animals are examples of
disruptions of the natural balance
the interdependence of living things
adaptations for survival under certain conditions
involuntary responses to stimuli
Extinction of a species is most likely to occur as a result of
evolution
migration
selective breeding
environmental changes
The diagram shows two different-colored moths resting on a tree trunk.
How does this difference in pattern and color affect the moths’ ability to survive in the environment?
The white moth will survive because it blends in with tree.
The black moth will survive because it blends in with tree.
The white moth will survive because it does not blend in with the tree.
The black moth will not survive because it blends in with tree.
The diagram below shows the head structure of four different birds.
The birds’ beaks show how the birds
compete for the same food in their community
require different amounts of food for survival
store food for the winter months
are adapted to get food from different sources
What advantage does a species that reproduces sexually have over a species that reproduces
asexually?
There is greater variation among the offspring.
The offspring are identical to the parents.
Only one parent is necessary for reproduction.
No sex cells are needed for reproduction.
The diagram shows a population of adult giraffes over time. Letters A, B, and C represent three time periods.
Which process does this diagram best represent?
ecological succession
natural selection
genetic engineering
asexual reproduction
When the environment changes more quickly than a species can adapt, the species may become
extinct
dominant
diverse
overpopulated
The fur of the snowshoe rabbit changes to a lighter color in the winter. This allows the rabbit to blend in with its surroundings. This change is an example of
extinction
competition
adaptation
ecological succession
The diagram shows a food web.
Which three organisms in the food web are competing for the same food resource?
carrot, rabbit, and fox
grain, bird, and owl
fox, owl, and rabbit
bird, mouse, and grasshopper
One type of organism in this web that represents a producer is
rabbits
grasses
trout
snakes
Which organisms obtain energy for growth and development directly from the Sun?
caterpillars
hawks
frogs
bean plants
According to this food web, which organisms are herbivores?
caterpillars
foxes
hawks
snakes
The diagram below shows a food web for a community.
Which organisms in the diagram are carnivores?
rabbits and birds
grasshoppers and mice
carrots and grasses
foxes and owls
Base your answers to question on the food web and on your knowledge of science. Letters A, B, C, and D represent different energy levels in the energy pyramid. Which organism labeled in the food web could be placed on the energy pyramid at level B ?
Crickets
Grass
Owl
Hawk
Base your answers to question on the woodland and pond ecosystems illustrated below.
What is the main source of energy for these ecosystems?
Water
Human
Sun
Fish
Base your answers to question on the woodland and pond ecosystems illustrated below.
Identify a consumer in these ecosystems.
Grass
Deer
Tree
Water
The diagram shows a part of a human body system.
The possible movement represented by the arrows in the diagram is coordinated by the
circulatory system
excretory system
nervous system
reproductive system
Which substance provides humans with their
main source of energy?
food
carbon dioxide
water
chlorophyll
When a human exercises, sweat often forms on the skin. Sweating is an example of the human body’s ability to
recycle nutrients
respond to the environment
obtain water for nourishment
make more energy
Base your answer to the question on the woodland and pond ecosystems illustrated.
The members of these ecosystems interact with one another as well as with the nonliving environment.
Which organism is a consumer in these ecosystems?
sun
deer
grass
trees
Base your answers to the question on the diagrams of a food chain and energy pyramid below and on your knowledge of science. Food chains and energy pyramids are used to help us understand the flow of energy in an ecosystem.
If the plants die during a summer drought, the cricket population would most likely.
decrease
increase
remain the same
Base your answers to the question on the diagrams of a food chain and energy pyramid below and on your knowledge of science. Food chains and energy pyramids are used to help us understand the flow of energy in an ecosystem. If the number of frogs increases, the snake population would most likely
decrease
increase
remain the same
Base your answers to the question on the diagrams of a food chain and energy pyramid below and on your knowledge of science. Food chains and energy pyramids are used to help us understand the flow of energy in an ecosystem.
What is one similarity between what food chains and energy pyramids represent regarding energy flow.
energy flows in one direction.
energy flows in both directions.
energy does not flow.
both end with producers/plants
Base your answers to the question on the diagrams of a food chain and energy pyramid below and on your knowledge of science. Food chains and energy pyramids are used to help us understand the flow of energy in an ecosystem.
What is one difference between what food chains and energy pyramids represent regarding energy flow.
The energy pyramid shows relative population sizes.
The food chain shows relative population sizes.
The food chain shows energy lost between stages.
The energy pyramid does not show that the amount of energy changes between levels.
The Punnett square shows an RR pea plant crossed with an Rr pea plant.
What percentage of the offspring will have a full, round pod shape?
0
25
50
100
Complete the Punnett square provided below to show the crossing of two Rr parents
If 100 offspring were produced from the crossing shown in the Punnett square, approximately how many would have a wrinkled pod shape?
25
50
75
100
The kidneys, which remove dissolved wastes from the blood, are organs of the
endocrine system
excretory system
skeletal system
nervous system
Which two systems of a rabbit’s body must be working together for the rabbit to run away from a fox?
digestive and endocrine
reproductive and nervous
muscular and skeletal
excretory and respiratory
Which process is illustrated in the diagram?
natural selection
mutation
metamorphosis
photosynthesis
The diagram show various forms of reproduction. Which form of reproduction (asexual or sexual) is shown by the first column of the chart.
asexual
sexual
The diagram show various forms of reproduction. Which form of reproduction (asexual or sexual) is shown by the first column of the chart.
asexual
sexual
The diagram show various forms of reproduction. Which form of reproduction (asexual or sexual) is shown by the first column of the chart.
asexual
sexual
The diagram show various forms of reproduction. Which form of reproduction (asexual or sexual) is shown by the first column of the chart.
asexual
sexual
In sexual reproduction, what fraction of genes does each parent contribute to the offspring?
1/4
1/2
1/3
3/4
The male sex cell is the
egg
ovary
sperm
testes
In multicellular organisms, cell division is required for growth and
circulation
locomotion
repair
respiration
Base your answer to the question on the Punnett square below, which shows a cross between two tall pea plants
(Tt × TT).
What percentage of the offspring will grow tall?
25%
50%
75%
100%
Base your answer to question on the Punnett square below, which shows a cross between two tall pea plants (Tt × TT).
According to the Punnett square, what is the probability of an offspring inheriting two tall genes?
(Express your answer as a fraction or percentage.)
25%
50%
75%
100%
The drawing shows a woodpecker using its long, sharp beak to obtain insects. What factor might contribute to the extinction of this species of woodpecker?
(1) a new source of food
an overabundance of trees
the use of pesticides in the forest
an increase in the population of insects
The fur of a snowshoe rabbit changes to white during the winter. This change is an example of
adaptation
competition
metamorphosis
metabolism
Base your answers to question on the diagram and on your knowledge of science. The diagram represents a pond community containing a variety of plants and animals.
Why are the fish able to survive in the pond?
The fish use carbon dioxide produced by the plants.
The fish use oxygen produced by the plants.
The plants use oxygen produced by the fish.
The plants use chlorophyll produced by the fish.
Base your answers to question on the diagram and on your knowledge of science. The diagram represents a pond community containing a variety of plants and animals.
The main source of energy for this pond community is the
plants
Sun
pond water
animals
The vast variety of different traits found in humans results from
intensive training and education
sexual reproduction and mutations
exercise and conditioning
birth defects and recessive genes
When a person breathes, the lungs absorb oxygen, which is used by cells to carry out the process of
respiration
secretion
photosynthesis
excretion
Which human body systems are directly involved in reflex actions, such as knee jerk, blinking, and jumping when startled?
circulatory and respiratory
digestive and excretory
nervous and muscular
reproductive and skeletal
Base your answers to question on the diagram and on your knowledge of science. The diagram shows a model of sexual reproduction. The lines in each cell represent genetic material (chromosomes). Which letter in the diagram represents a female sex cell?
A
B
C
D
Base your answer to question on the diagram and on your knowledge of science. The diagram shows a model of sexual reproduction. The lines in each cell represent genetic material (chromosomes).
Which process is occurring at C?
mitosis
meiosis
fertilization
development
Which of the organisms shown below consists of only one cell?
pine tree
ameba
mushroom
earthworm
If a species is no longer able to reproduce, it will
adapt to its environment
become immune to disease
become extinct
increase its population
What is the main function of the circulatory system?
secrete enzymes
digest proteins
produce hormones
transport materials
The diagrams below show the plant communities present in the same area at different times over a 200-year period following a forest fire. What is the correct sequence of these plant communities following the forest fire?
B -> A ->D -> C
B -> C -> D -> A
B -> D -> C -> A
B -> A -> C -> D
The diagram shows a human body system. What are two of the functions performed by this body system?
protects and supports the body
produces and transports oxygen within the body
produces and excretes waste products
controls and coordinates body activities
Which sequence lists the levels of organization in
the human body from simplest to most complex?
organ system -> tissue -> cell -> organ
tissue -> cell -> organ -> organ system
organ -> organ system -> tissue -> cell
cell -> tissue -> organ -> organ system
Identify one consumer shown in this ecosystem.
Hawk
Pine tree
Sun
Rock
Identify one producer shown in this ecosystem.
Hawk
Pine tree
Sun
Rock
What is the primary source of energy for this ecosystem?
Hawk
Pine tree
Sun
Rock
Base your answers to question on the diagram and on your knowledge of science.
The diagram shows the result of sexual reproduction.
What are the two sex cells that are necessary for sexual reproduction.
ham and eggs
sperm and egg
testes and ovary
seed and fruit
Base your answers to question on the diagram and on your knowledge of science. The diagram shows the result of sexual reproduction. In each of the offspring, what percentage of the genetic material comes from the male parent?
100%
25%
50%
75%
Base your answers to question on the diagram and on your knowledge of science. The diagram shows the result of sexual reproduction. What is one advantage that a species that reproduces sexually has over a species that reproduces asexually
The offspring are more likely to survive.
The offspring are more likely to go extinct.
The offspring are less likely to survive.
The offspring are less variable.
The drawings below show four animals.
What do all four animals have in common?
They reproduce asexually.
They are composed of cells.
They have similar means of locomotion.
They have the same internal structures
In humans, a fertilized egg contains 46 chromosomes. Which bar graph best represents the number of chromosomes contained in the sperm and egg before they united to make the fertilized egg?
The diagram below shows a one-celled organism reproducing.
What type of reproduction is illustrated in the diagram?
Sexual
Fertilization
Asexual
Gamete
Competition is most likely to occur between which two organisms?
deer and butterflies
owls and bacteria
goldfish and rabbits
grass and strawberry plants
How do decomposers obtain their food?
hunting and killing prey for food
changing carbon dioxide and water into food
absorbing food from dead organisms
producing food from oxygen and sunlight
Base your answers to question on the food chain below and on your knowledge of science.
grain -> grasshoppers -> frogs -> snakes -> owls -> bacteria
What represents the flow of energy in this food chain?
grain
frogs
bacteria
arrows
Base your answers to questions 65 through 67 on the food chain below and on your knowledge of science.
grain -> grasshoppers -> frogs -> snakes -> owls -> bacteria
Which organism in this food chain is responsible for recycling nutrients?
grain
frogs
bacteria
snakes
The diagram shows a deer and green plants.
Which statement best describes the relationship between the deer and the plants?
The deer supplies food and oxygen to the green plants.
The deer supplies food and carbon dioxide to the green plants.
The green plants supply food and carbon dioxide to the deer.
The green plants supply food and oxygen to the deer.
All living organisms are dependent on plants because plants
produce carbon dioxide
remove oxygen from the air
are producers
are consumers
Which order of succession of natural communities would most likely occur in New York State?
grasses -> trees -> bushes
trees -> bushes -> grasses
bushes -> grasses -> trees
grasses -> bushes -> trees
Base your answers to question on the diagram and on your knowledge of science. The diagram represents an ecosystem. Identify one producer shown in the diagram.
Sun
Pine tree
Rabbit
Fish
What is the original source of energy for this ecosystem?
Sun
Pine tree
Rabbit
Fish
The chart lists two specific organisms and describes the diet of each. Completes the chart by placing the correct term in the blank spaces. The first row has been completed as an example.
carnivore
herbivore
omnivore
decomposer
Feathers, wings, and the hollow bones of birds are examples of
adaptations for flight
responses to stimuli
unnecessary body parts
reproductive structures
Asexually produced offspring are genetically
identical to the parent
different from the parent
different from each other
formed by two parents
The diagram below shows information about the reproduction and development of a rabbit.
Which letter in the diagram represents fertilization?
A
B
C
D
Humans have several organ systems that allow them to carry on all life activities. Identify one organ system that is responsible for each life activity listed. The first row has been completed as an example.
Which system is letter A?
Reproductive
Excretory
Respiratory
Muscular
Humans have several organ systems that allow them to carry on all life activities. Identify one organ system that is responsible for each life activity listed. The first row has been completed as an example.
Which system is letter B?
Reproductive
Excretory
Respiratory
Muscular
Humans have several organ systems that allow them to carry on all life activities. Identify one organ system that is responsible for each life activity listed. The first row has been completed as an example.
Which system is letter C?
Reproductive
Excretory
Respiratory
Circulatory
Humans have several organ systems that allow them to carry on all life activities. Identify one organ system that is responsible for each life activity listed. The first row has been completed as an example.
Which system is letter D?
Reproductive
Excretory
Respiratory
Muscular
Humans have several organ systems that allow them to carry on all life activities. Identify one organ system that is responsible for each life activity listed. The first row has been completed as an example.
Which system is letter E?
Reproductive
Excretory
Respiratory
Muscular
Running to escape danger is an action that requires the nervous system to coordinate the
interaction of which two body systems?
digestive and endocrine
muscular and skeletal
reproductive and excretory
circulatory and digestive
Which event is the best example of competition between species in a pond environment?
dragonflies landing on lily pads
frogs and toads eating flies
lizards and snakes lying in the sun
hawks eating mice
Grasses, shrubs, and trees are called producers because they make
water
carbon dioxide
minerals
food
What are produced in both the male and female reproductive systems in humans?
sperm
nutrients
fertilized eggs
sex cells
The diagram represents gas exchange between several different organisms. The animals in the diagram are dependent on the plants for oxygen.
What is one other way in which animals are dependent on plants.
animals eat plants
animals do not depend on plants at all.
plants eat animals
animals breathe in carbon dioxide from plants.
Base your answers to question on the diagram and on your knowledge of science. The diagram shows a typical plant cell and some of its parts.
Which cell part directs the activities of the cell?
Chloroplast
Nucleus
Large vacuole
Cell membrane
Base your answers to question on the diagram and on your knowledge of science. The diagram shows a typical plant cell and some of its parts. Which are two cell parts that indicate this diagram represents a plant cell and not an animal cell?
Nucleus and large vacuole
Chloroplast and cell wall
Cell membrane and nucleus
Cell membrane and nucleus
Which sequence correctly shows the levels of increasing organization in the human body?
tissues -> cells -> organ systems -> organs
cells-> tissues-> organs -> organ systems
organs -> organ systems -> cells -> tissues
organ systems-> organs -> tissues -> cells
In humans, a trait can be determined by one pair or many pairs of
genes
microbes
cells
organs
Pea plants can produce round or wrinkled peas. The genes for round and wrinkled peas are: R = round (dominant)
r = wrinkled (recessive) Which Punnett Square shows a cross between a hybrid round-pea plant (Rr) and a wrinkled-pea plant (rr).
The diagram shows an ecosystem in a fish tank.
One consumer in this tank is the
water
fish
green plant
rock
The diagram below shows a rabbit population at two different times.
Which environmental factor may have contributed to the increase in the rabbit population?
decrease in resources
decrease in predators
increase in disease
increase in pollution
Base your answers to question on the food web and on your knowledge of science.
Which organism is the producer in this food web?
grass
mice
hawk
owl
Base your answers to question on the food web and on your knowledge of science.
Explain why mice are classified as omnivores in this food web.
mice eat plants only
mice eat meat only
mice eat both grass and crickets
mice do not eat.
The diagram shows a population of adult giraffes over time. Letters A, B, and C represent three time periods.
Which process does this diagram best represent?
ecological succession
genetic engineering
natural selection
asexual reproduction
Different species of carnivorous animals that
share the same habitat in an ecosystem may
become decomposers
compete for food
produce their own food
mate with each other
What is the major function of the human
excretory system?
eliminate waste materials
respond to stimuli
break down food mechanically
absorb nutrients from food
The chart below identifies the function of several organs found in a human body system.
Which human body system performs these functions?
skeletal
digestive
circulatory
respiratory
The diagram shows a sequence of environmental changes in an area over a long period of time.
Which statement best describes the changes shown in the diagram?
Over time, one natural area is replaced by another.
Over time, the number of fish increases.
The environment goes through seasonal changes.
Precipitation follows cloud formation.
The diagram below shows several organisms in a fish tank.
Which item in the tank produces oxygen?
plant
water
snail
rock
Base your answers to question on the diagram of a portion of an ecosystem and on your knowledge of science.
Give an example of one carnivore shown in this diagram.
Sun
Meadowlarks
Wheat
Grasshopper
Base your answers to the question on the food web and on your knowledge of science.
How do the rabbits depend on the energy from the Sun?
Rabbits do not need the energy from the Sun.
Rabbits eat plants (grasses/shrubs) and plants use the Sun’s energy to make food/sugar.
Rabbits make food from the Sun’s energy.
Rabbits use the Sun’s energy as camouflage
Base your answers to the question on the food web and on your knowledge of science.
Which three organisms in this food web are herbivores?
Trees, Mice, Mountain lions
Grasses, Hawks, Mice
Shrubs, Hawks, Snakes
Deer, Crickets, Rabbits
Base your answers to the question on the diagram and on your knowledge of science. The diagram shows a portion of an ecosystem.
Identify the original source of energy for this ecosystem.
Sun
Tree
Bird
Beetle
Base your answers to the question on the diagram and on your knowledge of science. The diagram shows a portion of an ecosystem.
Why is bacteria in the soil necessary in this ecosystem?
Bacteria make food by photosynthesis
Bacteria are herbivores process energy
Bacteria are decomposers that recycle matter.
Bacteria are carnivores process energy
Base your answers to the question on the diagram and on your knowledge of science. The diagram shows a portion of an ecosystem.
Which choice is a predator-prey relationship shown in this diagram.
Predator: robin Prey: worm
Predator: woodpecker Prey: grass
Predator: worm Prey: beetle
Predator: woodpecker Prey: squirrel
When the environment changes more quickly than a species can adapt, the species may become
extinct
dominant
diverse
overpopulated
Complete the table below by identifying the human organ system that performs each function listed. The first row has been completed.
A = circulatory B = digestive C = respiratory
A = circulatory B = respiratory C = digestive
A = respiratory B = digestive C = circulatory
A = digestive B = circulatory C = respiratory
Base your answers to the question on the diagram and on your knowledge of science. The diagram represents the sexual reproduction of rabbits.
Identify the sex cell labeled A and the sex of the rabbit that produced cell A.
Cell A: egg
Sex of rabbit:male
Cell A: sperm
Sex of rabbit:male
Cell A: egg
Sex of rabbit:female
Cell A: sperm
Sex of rabbit:female
Base your answers to the question on the diagram and on your knowledge of science. The diagram represents the sexual reproduction of rabbits.
Why is the offspring is not genetically identical to either parent?
The offspring gets all of it's traits from it's mother.
The offspring gets all of it's traits from it's father.
The offspring gets half of it's traits from it's mother and half from it's father.
The offspring gets all of it's traits from it's grandmother.
A student was studying a prepared slide of human cheek cells under a compound light microscope. The diagram represents what the student observed on the slide at a magnification of 100×
Identify the shaded structure shown in each cell in the diagram.
cell membrane
cytoplasm
nucleus
chloroplast
Which term identifies a group of cells that work together to perform a similar function?
molecule
organ
organism
tissue
The diagram below shows cells from two different organisms. Several major cell structures are labeled.
State two structures that explains why cell B is classified as a plant cell.
cell membrane and cell wall
nucleus and cell membrane
chloroplast and nucleus
chloroplast and cell wall
The diagram below shows a food chain.
What do the arrows in the diagram represent?
flow of energy
life cycle stages
one community replacing another
renewable resource depletion
Base your answers to the question on the food web below and on your knowledge of science.
What two consumers in this food web eat producers.
rabbits and squirrels
owls and hawks
hawks and foxes
squirrels and owls
Base your answers to the question on the food web below and on your knowledge of science.
Why are the foxes shown in this food web categorized as carnivores?
Foxes eat other animals and not plants
Foxes are not carnivores
Foxes eat only plants
Foxes eat producers
Base your answers to the question on the food web below and on your knowledge of science.
Both owls and hawks eat mice. Why would the removal of mice from this food web likely affect owls more than hawks.
Hawks have more sources of food (other animals) to eat than owls.
Hawks do not eat mice
Owls do not eat mice
Both owls and hawks are producers
Organisms that consume wastes to obtain the nutrients they need to survive are classified as
decomposers
herbivores
predators
producers
Base your answers to the question on the diagram below and on your knowledge of science.
The diagram shows how modern types of flowers developed from early types of flowers over the last 75 million years.
What is the most likely reason why these early flowers gradually changed to many different types of
flowers over time?
The flowers’ traits were genetically engineered.
The environments of the flowers stayed the same.
The genetic material of the flowers stayed the same.
The flowers adapted to environmental conditions.
Base your answers to the question on the diagram below and on your knowledge of science.
The diagram shows how modern types of flowers developed from early types of flowers over the last 75 million years.
Which process is represented in this diagram?
evolution
photosynthesis
selective breeding
ecological succession
Naturally occurring variations within a species
are mainly the result of mutations and
sexual reproduction
dynamic equilibrium
metabolism
camouflage
Which outcome is most likely if a person
consumes more Calories than needed for
daily activities?
weight loss
weight gain
deficiency disease
infectious disease
Which human organ system produces sperm or
egg cells?
digestive system
nervous system
respiratory system
reproductive system
Cancer is best described as
a type of genetic engineering
the merging of sex cells
abnormal cell division
tissue that stops growing
The hydra shown below is reproducing asexually.
What percentage of the offspring’s genetic information is the same as the genetic information of the parent?
25%
50%
75%
100%
The table below lists two structures in the human digestive system and two functions of each. Choose the choice that completes the table by the type of digestion represented by each function described.
mechanical
chemical
chemical
mechanical
chemical
mechanical
mechanical
chemical
mechanical
chemical
mechanical
chemical
chemical
chemical
mechanical
mechanical
The fur of the snowshoe rabbit changes to a
lighter color in the winter. This allows the rabbit
to blend in with its surroundings. This change is
an example of
extinction
competition
biological adaptation
ecological succession
The diagram below shows a human organ system.
Which human organ system is shown?
nervous
digestive
circulatory
respiratory
Abnormal cell division in humans may result in
cancer
fertilization
asexual reproduction
dynamic equilibrium
The basic life functions of an organism are carried
on by
cells
nutrients
atoms
hormones
The diagram shows a food chain
Which organisms in this food chain are herbivores?
green plants
caterpillars
birds
snakes
The diagram shows several different organisms found in an area.
The worms in the diagram represent
a community
an ecosystem
a habitat
a population
The diagram shows how a plant community changed over 300 years.
Which process caused the gradual changes shown in this plant community?
urban growth
global warming
environmental pollution
ecological succession
Which process involves choosing certain organisms
to reproduce with one another in order to pass
on specific, desirable traits to their offspring?
selective breeding
asexual reproduction
resource acquisition
natural selection
In living things, traits are passed on from one generation to the next by the transfer of
blood
minerals
Calories
DNA
Identify one other structure that could be found in this plant cell that is not labeled in the diagram.
nucleus
heart
muscle
brain
Producers, consumers, and decomposers are three types of organisms that obtain nutrients in different ways.
What type of organism is A?
Producer
Decomposer
Consumer
Philosopher
Producers, consumers, and decomposers are three types of organisms that obtain nutrients in different ways.
What type of organism is B?
Producer
Decomposer
Consumer
Philosopher
Producers, consumers, and decomposers are three types of organisms that obtain nutrients in different ways.
What type of organism is C?
Producer
Decomposer
Consumer
Philosopher
What human organ system is A?
Circulatory
Digestion
Reproduction
Respiration
What human organ system is B?
Circulatory
Digestion
Reproduction
Respiration
What human organ system is C?
Circulatory
Reproduction
Digestion
Respiration
