wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

7th grade Science Review

Total questions: 74

Worksheet time: 45mins

Name
Class
Date
1.

how many chromosomes do you get from you mom

a)

23

b)

31

c)

46

d)

100000000

2.

Which is the structure that we can't find in animal cells?

a)

Mitochondria

b)

Nucleus

c)

Cell membrane

d)

Cell wall

3.

The organelle in charge of transforming the energy of the sunlight into chemical energy (glucose)?

a)

Mitochondria

b)

Golgi bodies

c)

Chloroplast

d)

Nucleus

4.

What are genes?

a)

Segments of DNA found in chromosomes.

b)

Another word used for chromosomes.

c)

Several chromosomes put together.

d)

An article of clothing.

5.

What are alleles?

a)

Different versions of a chromosome

b)

Different versions of DNA

c)

Different versions of a gene

d)

Different versions of a phenotype

6.

What is the difference between genotype and phenotype?

a)

Genotype is observable traits, Phenotype is the combination of alleles that you inherit.

b)

Genotype is the combination of alleles that you inherit, Phenotype is observable traits.

c)

They are identical

d)

Phenotype is used to describe physical traits, and Genotype is used to describe personality traits.

7.

What is heredity?

a)

The passing of money from parents to offspring.

b)

The passing of genetic material from parents to offspring.

c)

The passing of opinions from parents to offspring.

d)

The passing of education from parents to offspring.

8.

This picture shows a desert environment, which is home to many lizards, small mammals, and cacti and other plants with short roots. This environment allows some plants and animals to live there because the soil in the desert is

a)

dry and hard, allowing small animals to lay on the hard soil to get sunlight while allowing plants with short roots to sit on top of the soil and hold onto water.

b)

dry and sandy, allowing small animals to burrow and hide from the Sun while allowing plants with short roots to reach and hold onto water.

c)

wet and hard, allowing small animals to rest and stay cool on the wet soil while allowing plants with short root systems to push through the hard soil to soak up water.

d)

cold and wet, allowing small animals to remain cool when it rains while allowing plants with short root systems to easily push through sandy soil to soak up water

9.

The picture below shows a scoop of soil that a student dug up from her school yard. How does the soil environment support the earthworm in the student's hands?

a)

It is moist and cool with decaying debris

b)

It gets a lot of sunlight so the earthworm can see

c)

It has excessive oxygen for the earthworm to breath

d)

It has clay for the earthworm to form holding tunnels

10.

Which ecosystem would most likely survive if the grasses were destroyed by a plant virus?

a)

Ecosystem 2, because there are not many predators.

b)

Ecosystem 2, because the grasses could grow back quickly.

c)

Ecosystem 1, because there is a variety of producers that support the ecosystem

d)

Ecosystem 1, because there are fewer primary consumers.

11.

Where does the food chain begin?

a)

Insects

b)

The sun

c)

Mice

d)

Birds of prey

12.

The process of which plants intake energy from the sun and convert it to glucose (sugar)

a)

Solar conversion

b)

Energy intake

c)

Photosynthesis

d)

I don't know

13.

What organs in your digestive system are shown above?

a)

Gallbladder, Salivary Glands, Liver, Stomach

b)

Pancreas, Liver, Stomach, Gallbladder

c)

Kidney, Stomach, Liver

d)

Not sure

14.

What is the main control center of cells?

a)

Nucleolus

b)

Nucleus

c)

Golgi Body

d)

Lysosomes

15.
What type of organisms are the first step in a food chain?
a)
Consumers
b)
Predators
c)
Producers
16.
What does an energy pyramid represent?
a)
Food pyramids show the different food chains in a community.
b)
Energy pyramids show the same total matter at all levels.
c)
Shows the amount of energy available at each feeding level in an ecosystem.
17.
What is a food chain?
a)
A chain that shows the flow of energy
b)
A triangle that shows trophic levels
c)
A chain used in fishing
18.
What organisms are at the bottom of an energy pyramid?
a)
Producer
b)
Consumer
c)
Decomposer
d)
Scavenger
19.
Who is the top predator on this food web?
a)
Hawk
b)
Snake
c)
Frog
d)
Cattail
20.
What is an example of a decomposer?
a)
Plum
b)
Mushroom
c)
Deer
d)
Bird
21.
An organism that eats both plants and animals are know as a 
a)
Carnivore
b)
Omnivore
c)
Herbivore
d)
Decomposer
22.

the basic unit of structure and function in living organisms

a)

Cell

b)

Atom

c)

Nucleus

d)

Proton

23.

regulates what goes into and out of the cell

a)

Chloroplast

b)

Cell wall

c)

Cell membrane

d)

Brain

24.

all organisms are composed of one or more cells

a)

Cell phone

b)

Cell components

c)

Cell wall

d)

Cell Theory

25.

gives structure to plant cells

a)

Cell Wall

b)

Cell membrane

c)

Cellulose

d)

Mitochondria

26.

site of photosynthesis in plant cells

a)

Nucleus

b)

Cell wall

c)

Chloroplast

d)

Chlorophyll

27.

fluid that surrounds the organelles

a)

Cytoplasm

b)

Cell

c)

Nucleus

d)

Vacuole

28.

converts energy from food into energy a cell can use

a)

Chloroplast

b)

Mitochondria

c)

Nucleus

d)

Vacuole

29.

contains genetic material and controls the use of genes; found in eukaryotic cells

a)

Vacuole

b)

Cell Wall

c)

Cell Membrane

d)

Nucleus

30.

a group of tissues that perform a specific function or group of functions

a)

Organ

b)

Tissue

c)

Organ System

d)

Organism

31.

a group of organs that work together to perform a specific function or group of functions

a)

Tissue

b)

Organ System

c)

Organism

d)

Organ

32.

storage area for cells; water storage in plants

a)

Vacuole

b)

Organ

c)

Organelle

d)

Mitochondria

33.

In genetics, a lower case letter...

a)

is the dominant gene

b)

is the recessive gene

34.

Biodiversity can include genetic diversity within a population or variation of populations within an ecosystem. Given this information, which of the following is likely to have the most biodiversity?

a)

a tropical forest

b)

an arctic tundra

c)

a deciduous forest

d)

a residential backyard

35.

Which of these explains why an ecosystem is healthy when it has a variety of species?

a)

An increased number of species allows for fewer food chains.

b)

A larger number of species reduces competition for abiotic resources.

c)

A larger number of species allows for greater diversity in interdependence.

d)

An increased number of species contributes to greater chances for adaptability.

36.

Which of these is the best example of physical weathering?

a)

ice fracturing a stone

b)

insects eating a dead tree

c)

a bulldozer pushing soil

d)

acid rain dissolving limestone

37.

As humans travel in space, which gas is provided in the atmosphere of the

spacecraft and which gas is removed from the atmosphere of the spacecraft?

a)

Carbon dioxide is provided. Oxygen is removed.

b)

Carbon dioxide is provided. Nitrogen is removed.

c)

Oxygen is provided. Nitrogen is removed.

d)

Oxygen is provided. Carbon dioxide is removed.

38.

Which properties are most important to sustaining life on Earth?

a)

1 and 2

b)

2 and 3

c)

3 and 4

d)

4 and 5

39.

The outer layers of astronauts’ space suits are reflective in order to protect them from

a)

the vacuum of space.

b)

intense sunlight.

c)

micrometeoroids.

d)

water loss.

40.

Which of the following are true?

a)

All cells come from other cells.

b)

Cells are the basic building blocks of life.

c)

All organisms are composed of one or more cells.

d)

All of the above are true.

41.

Which statement of levels of organization from simplest to most complex?

a)

cells, tissue, organs, organ system, organisms

b)

organisms, organ system, organs, tissue, cells

c)

organ, cells, tissue, organ system, organisms

d)

tissue, cells, organ system, organism, organ

42.
A plant growing in response to the sunlight. 
a)
Gravitropism 
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
43.
Which of the following responses is a plant growing toward or leaning toward light?
a)
thigmotropism
b)
hydrotropism
c)
phototropism
d)
gravitropism
44.

Seeds that are planted upside down still grow into mature plants. Which explanation best explains this phenomenon?

a)

The roots change into branches, and the branches turn into roots.

b)

The roots grow toward the force of gravity, and the shoots grow away.

c)

The plant will become a smaller version of a mature plant.

d)

Roots always grow toward the dark, and shoots grow toward the light.

45.
The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 
a)
respiratory 
b)
digestive
c)
skeletal
d)
nervous
46.

A mom with the heterozygous gene for Widows peak and a father with the heterozygous gene for Widows peak: odds their baby HAS a widow's peak?

a)

0%

b)

25%

c)

75%

d)

100%

47.

A mom with a dominant HOMOZYGOUS gene of a hitchhiker's thumb and a dad with a homozygous recessive gene for a straight thumb. What is the baby's phenotype?

a)

50% straight thumb

b)

100% Hitchhiker's Thumb

c)

25% Hitchhiker's Thumb

48.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
49.
The black mice living on the black lava rock have the successful adaptation of camouflage and are more likely to survive and live long enough to reproduce and pass on that trait.  This is an example of:
a)
genetic variation
b)
overproduction
c)
natural selection
d)
selective breeding
50.

have a nucleus and other membrane bound organelles

a)

eukaryotic cells

b)

prokaryotic cells

c)

cytoplasm

51.

do not have a nucleus or other membrane bound organelles

a)

prokaryotic cell

b)

eukaryotic cell

c)

cytoplasm

52.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
53.

What is tropism?

a)

A plant's response to a stimulus

b)

A plant reproducing

c)

An animal's response to a stimulus

d)

A prokaryote's response to a stimulus

54.
A green pea plant (Gg) is crossed with a yellow pea plant (gg). Describe the genotype of the offspring. (Be sure to remember that the capital letter is dominant).
a)
50% heterozygous and 25% homozygous recessive
b)
50% heterozygous and 50% homozygous recessive
c)
100% homozygous recessive
d)
25% heterozygous and 50% homozygous
55.
Two heterozygous white (brown fur is recessive) rabbits are crossed. What is their genotype?
a)
25% homozygous domestic; 25% homozygous recessive; 50% heterozygous
b)
50% homozygous dominant; 50% heterozygous
c)
25% homozygous domestic; 75% homozygous recessive
56.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
57.
A living or once-living organisms in an ecosystem is a
a)
population
b)
biotic factor
c)
abiotic factor
d)
community
58.
A system made up of organisms interacting with one another
a)
biology
b)
abiotic
c)
biotic
d)
ecosystem
59.

Which type of cell DOES NOT have a nucleus?

a)

Prokaryotic

b)

Eukaryotic

60.
A large storm associated with low pressure, forms over water is called...
a)
Flood
b)
Hurricane
c)
Tsunami 
d)
Blizzard
61.
A spinning funnel cloud which causes much destruction is called a...
a)
Tornado 
b)
Earthquake
c)
Tsunami 
d)
Hurricane 
62.

Adaptations can be:

a)

camouflage

b)

ability to survive cold weather

c)

hunting skills

d)

all of the above

63.
producers get their energy from 
a)
the sun 
b)
water
c)
consumers
d)
carbon dioxide
64.
The process in which broken rock is transported (moved).
a)
deposition
b)
erosion
c)
weathering
d)
abrasion
65.
Acid in groundwater dissolves rock.
a)
mechanical weathering
b)
chemical weathering
66.

Identify the stimulus....."Birds flock to shelter when it starts to hail outside

a)

Birds flock to shelter

b)

It starts to hail outside

67.

Identify the stimulus..."A loud noise causes you to cover your ears"

a)

A loud noise

b)

You cover your ears

68.

Identify the response..."A squirrel scratches at a flea bite"

a)

A flea bite

b)

A squirrel scratches

69.

Identify the stimulus..."A person shivers because it is cold outside"

a)

Cold temperature

b)

A person shivers

70.

Is the stimulus external or internal....A loud noise?

a)

Internal

b)

External

71.

Is the stimulus internal or external? Feeling hungry

a)

Internal

b)

External

72.

Identify the tropism in the picture.

a)

Geotropism

b)

Positive Thigmotropism

c)

Hydrotropism

73.

Identify the tropism in the picture.

a)

Positive Hydrotropism

b)

Negative Phototropism

c)

Positive Gravitropism

d)

Positive Thigmotropism

74.

Identify the tropism in the picture.

a)

Positive Thigmotropism

b)

Negative Thigmotropism

c)

Geotropism

d)

Negative Hydrotropism

Similar Resources on Wayground

Rocas y minerales

74 questions

Rocas y minerales

quiz

Worksheet

•

7th Grade

Livestock Terms

71 questions

Livestock Terms

quiz

Worksheet

•

6th - 9th Grade

CFE Review Q3 and Q4 Honors 24

71 questions

CFE Review Q3 and Q4 Honors 24

quiz

Worksheet

•

7th Grade

Chapter 9: Animals

73 questions

Chapter 9: Animals

quiz

Worksheet

•

7th Grade

2nd Nine Weeks Review

75 questions

2nd Nine Weeks Review

quiz

Worksheet

•

7th - 8th Grade

25-26 Fall Final Review

70 questions

25-26 Fall Final Review

quiz

Worksheet

•

7th Grade

Chapter 2 lesson 1 Property of matter

78 questions

Chapter 2 lesson 1 Property of matter

quiz

Worksheet

•

7th Grade

Grade 7 Science: Structures: Form and Function

69 questions

Grade 7 Science: Structures: Form and Function

quiz

Worksheet

•

7th Grade